Tescos annual report Essay Example | Topics and Well Written Essays - 1000 words

Tescos annual report - Essay Example Customers bought over two million bags of barbecue fuel in the summer, and Christmas decoration sales were up by over 37% from the previous year. What will be interesting will be to see if this rise in non-food sales across the board will continue to grow on a year-by-year basis, or if at some point they will level off with only small incremental gains to be had. The underlying profit rose from 1832 (in 2004) to 2064 (in millions) (in 2005) and that rise is even more impressive since 2004 numbers were based on a 53 week year and 2005 was based on a 52 week year. The return on capital employed has not been 11% or higher since 2001, but in 2005 it was 11.5%. Earnings per share was also significantly higher and has been growing every year since 2001. In 2005 the earnings per share were 18.30 as compared to 10.66 in 2001. Last years earnings per share were 16.31. The increase from 16.31 to 18.30 represents an almost 17% higher earnings per share in one year. It would seem that the company's objective of focusing on superstores instead of smaller stores is working, especially in the UK. The overall number of stores in the UK dropped from 1,878 to 1,780 while the total sales area (in square feet) went from 23,291,000 to 24,207,000, which is an increase of almost 1 million square feet while closing almost 100 stores. The same scenario was taking place in the company's international markets, with one major difference. The company maintains only 554 international stores but has more square footage that than all the UK stores combined with 24,928,000 square feet. This is a significant difference. If each square foot generates the same amount of sales then international sales in the future are going to be significantly higher than UK sales, with not as much overhead or expenses. The Chairman's statement reflects the company's growth and aggressive style in an optimistic writing. He touts the fact that they have added two new non-executives to the Board, and that both were woman. He, and the company, faces shareholders and a public that are more discerning and political than ever before and has to manipulate the opinions held by those masses to maintain the edge developed over the company's competitors. By adding two women to the Board the company portrays its willingness to facilitate gender equity. The Chairman also touts how much the shareholders benefit from an investment in the company.The Chairman, and the Board, would certainly not wish to see a downswing in investor sentiment, with the resulting sales of shares that would lower the share prices, so he would present even bad news in a way that would seem positive, not that he would have had to with the numbers that Tesco has been generating. The numbers regarding cash flow are also strong. Net cash flow rose from 2,942 to 3,004 from 2004 to 2005 and the stronger number is reflected throughout the entire cash flow analysis. The cash inflow went from a negative (137) to a positive 259 (in millions). The company spent almost the same amount in 2005 as they did in 2004 to acquire tangible fixed assets. The company had less of a decrease in net debt than the year before, but it was still a substantial increase dropping from 4,090 to 3,842. That is a significant decrease in debt. As for the contributions made from each sector, as

Media News Versus You Tube Essay Example | Topics and Well Written Essays - 1750 words

Media News Versus You Tube - Essay Example The images posted on this site by the soldiers have made most Americans believe that the war on Iraq was not worth the loss of US lives. They need a full picture of Iraq to see what the gain is for that loss of life but the restrictions on media coverage do not allow this. The news media has been around for a very long time whereas, YouTube, the popular free video hosting website founded in February 2005, began its humble beginnings in a garage and offered the public a preview of the site in May 2005. And just six months later, YouTube made its official debut. Although this is an extremely large and popular site, it has met with much criticism. Videos filmed by amateur first gained popularity during the terrorist attacks on London subways and buses last summer, when traditional news organizations as well as informal websites utilized the photos and images supplied by witnesses. Now it is estimated that 100 million clips are viewed on YouTube daily and 65,000 videos uploaded every 24 hours. According to Nielsen/Netratings, the site has almost 20 million visitors each month, out of which around 44% are female, 56% male, while the most dominant age group is 12-17. Websites like YouTube, true to its motto, "broadcast yourself" allows people referring to them as "citizen journalists" to upload their own videos on an infinite array of subjects and has enabled anyone with a video camera or cell phone, live action films or written reports on news events. In relation to the Iraq war, the streamline media gives optimism to the viewers and shows the brighter side of the war, while the stories told by American soldiers in their homemade videos uploaded on this website, present a different picture. Beyond the philosophical dimensions of the global television communications, it is a close-up medium which readily involves emotions and is most effective in revealing the plights of the people. But troops who have served in Iraq and Afghanistan are hearing the message that they should carefully consider before they upload any videos on the website. As opposed to controlled media, YouTube has given access to the citizen journalists to provide first hand accounts of major events even though they are less journalism than the raw material generated by amateurs, which a skilled and trained journalist should know how to weigh, analyze, describe and explain. Therefore, one cannot deny the fact that to treat an amateur as equally credible as a professional, would be to erode the line between raw material and finished product. Many people believe that editorial gate keeping is a form of censorship if not mind control, and the explosion of the internet; giving the notion that 'information wants to be free' has made traditional journalism a ready target. To its proponents, citizen journalism represents a democratization of media and a shattering power of the unelected elite as it not only challenges the notion of journalism in journalism, but completely circumvents it. But there are people who are of the view that however wrapped in idealism, citizen journalism forms part of a larger attempt to degrade, even to disenfranchise journalism as practiced by trained professionals. However, there is no question that the soldier behind the

Discussion Essay Example | Topics and Well Written Essays - 1250 words - 3

Discussion - Essay Example These gases in the atmosphere provide an invisible blanket around the earth and help keep the planet warm enough. Global warming occurs because of the greenhouse effect, or when the gases like carbon dioxide increase resulting in more energy trapped and re-emitted back to the earth. This paper will attempt to describe in more detail the global warming phenomenon. Global warming was a term that was first used in 1975 by American scientist Wallace Smith Broecker who discovered that the climate of the earth is warming consistently due to various human activities. In a magazine, he published a paper entitled Are We on the Brink of a Pronounced Global Warming which was where he first coined the term. In 1979, the term was used again to depict the physical phenomenon that is heating up the planet. The article with the title The Charney Report was published by the National Academy of Science. (Yukozimo, 2014) The phenomenon of global warming can be further understood by taking a look at the earth’s ozone layer. The ozone layer is a region of dense gases in the stratosphere of the earth that is capable of blocking most of the harmful solar ultraviolet radiations. More than ninety percent of the ozone is present in the stratosphere of earth. It has a higher concentration of ozone as compared to the earth’s surface. Unfortunately, this important part of our atmosphere is slowly becoming more and more fragile and both nature and man can be held responsible. Manmade chemicals like halocarbons, CFCs, HCFCs, freon and halon contribute largely to the depletion of the ozone layer. Due to the increasing concentration of the refrigerants, solvents and propellants in the atmosphere, the ozone layer is under depletion of the rate of four percent per decade. As the ozone layer becomes thinner and thinner, ultraviolet light penetrates through

An Exploration of Childhood Obesity and Child Protection Essay

An Exploration of Childhood Obesity and Child Protection - Essay Example G. N. G. T. H. E., 2006) As per the medical experts, it had been proven that the hazard of being prone to severe health problems soars in accordance with the extra heaviness a person gains. Being obese as a child might also origin â€Å"psychological distress.† Teasing (which is normal) about the look impacts a childs self-confidence and sense of worth and generally escorts to loneliness and hopelessness. The figure of children suffering from obesity in the UK has ascended gradually over the past 20 years. In United Kingdom, currently the obesity epidemic is considered a foremost health concern. (NOËL CAMERON, N. G. N. G. T. H. E., 2006) Childhood Obesity is a severe physical condition. It is defined as carrying too much body fat for your height and sex. A person is considered obese if they have a body mass index or BMI (weight in kilograms divided by the square of their height in meters) of 30 or greater. Obesity is a risk factor for several chronic biological ailments. As studied earlier, obese children often turn into unhealthy, obese adults. Thus, most of these ailments manifest themselves during adulthood. One of the most hazardous consequences of obesity is type 2 diabetes. (KORBONITS, M., 2008) A study conducted by the National Audit Office (NAO) estimates that obesity directly caused more than 250,000 cases of type 2 diabetes in England in 1998. But what is truly alarming is the emergence of type 2 diabetes among schoolchildren. Another major health implication is the prevalence of coronary heart diseases and hypertension among obese people. (www.nao.gov.uk) The coronary heart disease is the leading cause of premature death among obese people. NAO had recorded that obesity caused some 28,000 heart attacks and approximately 750,000 cases of hypertension in England in the year 1998 alone. (www.nao.gov.uk) Excessive body

Archeology Research Paper Essay Example | Topics and Well Written Essays - 2250 words

Archeology Research Paper - Essay Example Gertrude Bell was a prominent explorer and traveller and became one of the first mountain or rock climbers of her time (Morell 3). Bell went to Jerusalem to study Arabic, and developed an obsession for archaeology in her travels there. Kathleen Kenyon, on the other hand, was one of the most celebrated female archaeologists of the 20th century and is well-known for her cautious excavation of the earliest city of Jericho. Kenyon was full of learning, a careful and precise recorder and wrote well (Morell 3). The Leakey family finally, made of Louis, Richard and Mary, was a family of archaeologists, as well as anthropologists (Morell 3). This family is considered to have made the main strides in people’s understanding and interpretation of the development of man, or otherwise early man, in Africa (Morell 4). They all resided in Kenya where they carried out their archaeological roles. For this reason, this paper has picked Louis Leakey as its subject and will discuss his contributi ons to the field of archaeology. Louis Seymour Leakey lived from 7th August, 1903 to 1st October, 1972. He was an English archaeologist and paleoanthropologist whose career was significant in creating human evolutionary growth, in Africa, especially through his findings in Olduvai Gorge (Bowman 15). Leakey also played a vital role in developing firms for future study in Africa, as well as for advocating for wildlife protection in Africa (Bowman 15). Having been the main mover in developing a custom of palaeoanthropological inquiry, Leakey motivated the following generation to carry on with it, particularly in his own family, most of whom became famous, as well. He took part in nationwide activities of British East Africa in addition to Kenya in the 50s. In the Philosophy of Nature, Leakey affirmed Darwins evolution theory solidly and set about to establish

Combustion of a series of Alcohols Essay Example for Free

Combustion of a series of Alcohols Essay The larger the surface area over which the reaction can occur, and the faster the reaction rate. This is because small particles have a large surface area in relation to their volume more particles are exposed and available for collision this means more collisions take place so the reaction is faster. Oppositely large particles have small surface area in relation to their volume fewer particles are exposed and available for collisions. This means less collisions and a slower reaction. To ensure that my test will be fair I have to keep all these factors the same except for one, the concentration. I will have to control the temperature of the room; the particle size will be same as I will shake the substance so it will be equally diffused. Hypothesis I predict that the higher the concentration of hydrochloric acid the faster the reaction occurs. The lower the concentration the slower the reaction is. Supporting information I base this hypothesis on the collision theory as I know that concentration affects the reaction greatly. This is because when there is a higher concentration the particles are closely packed together and there are more successful collisions occurring, thus making the reaction happen quicker. Preliminary For my preliminary I have used various concentrations of hydrochloric acid and 4cm of magnesium ribbon. The concentrations that I decided to experiment was he reason why I am doing a preliminary experiment is so that I know which concentrations of hydrochloric acid to use that would make my experiment more convenient. For the actual preliminary experiment I reacted hydrochloric acid with magnesium ribbon to see how long it took. I did this by watching when the magnesium ribbon had stopped reacting and disappeared. Although I was just using this method to find out how long a particular concentration took to finish reacting I attached a glass syringe to my conical flask to observe how much hydrogen was being produced, so that I could be prepared when it came to doing my actual experiment. The table below shows the amount of hydrochloric acid and water I used for a certain percent and the time taken for the magnesium ribbon to fully stop reacting. Volume of HCL (ml) Volume of H2O % of concentration Time taken for the mg ribbon to disappear (in seconds). From looking at the information from my preliminary I have decided to use the following concentrations for my actual experiment: 20%, 40%, 60%, 80%, 100%. The reason why I have decided to use these percentages of concentrations is because even though it shows a variety it will not be as time consuming as 10% concentration of hydrochloric acid took 1205 seconds which was approximately 20 minutes. 10% concentration took so long that I didnt have enough time, there for I left it anonymous. I also realised that even though I experiment 20% of hydrochloric acid it will still take long, there for I decided to lower the amount of magnesium ribbon so I decided to use 3. 5cm instead of 4cm. From doing my preliminary I have decided to repeat my experiment 3 times because this will give me a more reliable results to choose from and an average. This also will be less time consuming then repeating it 5 times. The preliminary experiment also helped my produce a better plan because I learnt that for 100% of concentration the reaction takes place quite quickly there for watching the stop watch had to be done very quickly but correctly. Plan: The apparatus that I will be needing for experiment and why: 3. 5cm of magnesium ribbons to react with HCL Stop watch to measure how long it took for the magnesium ribbon to stop reacting. Hydrochloric acid (1m) to react with the magnesium ribbon Measuring cylinder to measure the concentration of H20 and HCL Pipette to measure smaller concentrations of H20 and HCL Retort stand to hold the syringe Conical flast for the reaction Thermometer to measure room temperature Syringe to measure the volume of hydrogen produced Ruler to measure 3. 5cm of magnesium ribbon Scissors to cut the magnesium ribbon Distilled water to add with the concentrations of HCL Sand paper to sand the magnesium ribbon 1. I will firstly collect all the equipment needed for my experiment, then measure them to the exact measurement. I will start with 100% concentration of hydrochloric acid which will contain no distilled water and 10ml concentration. I will then measure my magnesium ribbon to 3. 5cm and sand it 8 times on each side making sure it is fair. Using the measuring cylinder and pipette I will put my hydrochloric acid into the conical flask. 2. To ensure that the magnesium ribbon doesnt get stuck I will coil the magnesium ribbon with a clean sterilised ruler. 3. I will then attach the syringe onto the retort stand. Then I will attach my conical flask with the syringe. 4. Because I want this test to be fair I cannot do it on my own so my partner will start the stopwatch as soon as I drop the magnesium ribbon into the hydrochloric acid. Then I will seal the conical flask with the cork. 5. Every 10 seconds my partner will tell my the time on the stop watch and then I will look at the syringe to see what the volume of gas produced is. I will note this down very quickly. 6. After the reaction has fully stopped. I will empty the conical flask, then start the same process again but for 80% concentration which is 8ml of hydrochloric acid and 2ml of distilled water. This process will happen for all 5 concentrations. 7. After experimenting all 5 concentrations I will repeat the same process 3 times to ensure my results are fair and reliable. Keeping my experiment fair: making sure all equipment is clean from unwanted substances. sanding the magnesium ribbon same times on each side. hile my partner starts stop watch, I quickly drop magnesium ribbon so it is done at the same time. Use the same length of magnesium ribbon, checking it is exactly 3. 5cm. Safety issues:aking sure I wear my goggles at all times. Tying hair up. Tuck in stalls, and stand up during experiment. Making sure I handle all the equipment correctly. If there is any spillage, quickly wiping it with paper towels. Obtaining evidence: 100% Time (sec) Volume 1 Volume 2 volume 3 Average 1.To find my average number of hydrogen produced I added the 3 volumes together then divided by 3. The answer most close I decided was my average. Show preview only The above preview is unformatted text This student written piece of work is one of many that can be found in our GCSE Patterns of Behaviour section.

Los Procesos Químicos Del Cuerpo

Los Procesos Quà ­micos Del Cuerpo Casandra Hernà ¡ndez Introduccià ³n A travà ©s de este trabajo la investigadora realizà ³ una revisià ³n de literatura relacionada a los procesos quà ­micos que ocurren en el cuerpo humano. Se comienza definiendo conceptos esenciales para comprender los procesos quà ­micos. Segà ºn Aguilar (2012) el cuerpo de los seres humanos es un sistema que està ¡ compuesto por cà ©lulas las cuales forman los tejidos. Mediante las cà ©lulas el cuerpo humano lleva a cabo las funciones vitales para vivir. El cuerpo del ser humano tiene procesos que son bà ¡sicos y que producen subsistemas esenciales donde un grupo de à ³rganos coordinados realizan las funciones esenciales del ser humano. El cuerpo humano tiene once sistemas que agrupan los à ³rganos esenciales para que funcione el cuerpo adecuadamente. Sistemas del cuerpo humano Estos sistemas son los siguientes: El sistema muscular que es el conjunto de mà ºsculos que tienen la responsabilidad de los cambios corporales, postura y locomocià ³n. El sistema à ³seo que es el conjunto de huesos que forman el esqueleto y protegen a los à ³rganos internos como el crà ¡neo y la columna vertebral. El sistema respiratorio que incluye a las fosas nasales, la faringe, la laringe y los pulmones que realizan el intercambio gaseoso. El sistema digestivo incluye la boca, el hà ­gado, el està ³mago, los intestinos y otros à ³rganos. Se encarga de realizar la degradacià ³n de los alimentos a nutrientes que luego asimila el cuerpo y utiliza en las actividades que realiza el organismo. El sistema excretor està ¡ compuesto por los rià ±ones y sus conductos los cuales funcionan para extraer los desechos metabà ³licos, osmorregulacià ³n y la homeostasis para mantener el equilibrio quà ­mico del cuerpo. El sistema circulatorio incluye el corazà ³n, vasos sanguà ­neos y cà ©lulas sanguà ­neas. El mismo sirve para llevar los alimentos y el oxà ­geno a las cà ©lulas. Ademà ¡s, recoge los desechos metabà ³licos que se elimina a travà ©s de los rià ±ones, en la orina y por el aire que se exhala por los pulmones. El sistema endocrino contiene las glà ¡ndulas productoras de hormonas que intervienen en la regulacià ³n del crecimiento, metabolismo y los procesos de la reproduccià ³n. El sistema nervioso està ¡ constituido por el cerebro, ganglios, nervios, à ³rganos de los sentidos para detectar, analizar los està ­mulos y crear las respuestas apropiadas. El aparato reproductor està ¡ compuesto por testà ­culos y ovarios para llevar a cabo el proceso de reproduccià ³n de los seres humanos. El sistema linfà ¡tico contiene los capilares circulatorios en los que se recoge y transporta el là ­quido de los tejidos. Ademà ¡s, transporta por el torrente sanguà ­neo los là ­pidos digeridos que vienen del intestino para eliminar y destruir las sustancias tà ³xicas. El mismo ayuda a que no se difundan las enfermedades a travà ©s del cuerpo. El sistema inmunolà ³gico està ¡ constituido por diferentes à ³rganos que està ¡n a travà ©s de los tejidos del cuerpo. Este sistema reconoce las estructuras y su principal propà ³sito es preservar su identidad. Està ¡ constituido por linfocitos y por anticuerpos. Se indica que el cuerpo humano es un mecanismo que se basa en los componentes quà ­micos para mantener un equilibrio en el mismo. El estado de equilibrio se le llama homeostasis. Cuando una o mà ¡s sustancias quà ­micas caen fuera de equilibrio por una disminucià ³n o aumento de los niveles, provoca que los sistemas del cuerpo humano trabajen de forma menos eficiente. Estos desequilibrios quà ­micos pueden suceder por un sinnà ºmero de razones logrando afectar el cuerpo de diversas formas (Melton, s.f.). La serotonina Segà ºn Melton (s.f.) la serotonina es un neurotransmisor que està ¡ en el cerebro. Cuando la serotonina se encuentra en niveles normales la persona tendrà ¡ una variedad de emociones y funcionarà ¡ eficientemente. Sin embargo, cuando los niveles de serotonina comienzan a disminuir por los cambios quà ­micos del cuerpo es por interaccià ³n farmacolà ³gica o por una enfermedad, que puede lograr que la personalidad del individuo cambie como: llegar a la depresià ³n y que aparezca el trastorno bipolar. De otra parte, cuando disminuyen los niveles de serotonina puede causar fatiga crà ³nica, trastornos del sueà ±o y cambios en el apetito. La insulina Tambià ©n, Melton indica que la insulina es una hormona que la produce el pà ¡ncreas y permite que la glucosa entre en las cà ©lulas del cuerpo. Cuando la misma se encuentra en niveles normales, se produce insulina suficiente y à ©sta es usada por el cuerpo para que la glucosa sea absorbida por las cà ©lulas del cuerpo para la obtencià ³n de energà ­a. Cuando los niveles de insulina comienzan a disminuir, se puede llegar a padecer de diabetes. La diabetes tipo 1 surge cuando el sistema inmunolà ³gico del cuerpo humano se vuelve en contra y a su vez destruye las cà ©lulas del pà ¡ncreas las cuales producen insulina. La diabetes tipo 2 ocurre cuando se producen las cà ©lulas que son resistentes a la insulina. Esto ocurre cuando las cà ©lulas no permiten a la insulina abrir las và ­as para que la glucosa penetre. El pà ¡ncreas produce una cantidad mayor de insulina cuando aumentan los niveles de glucosa en la sangre, pero las cà ©lulas no son receptivas y los niveles de g lucosa continà ºan en aumento. Desequilibrios hormonales pituitarios La glà ¡ndula pituitaria es una glà ¡ndula pequeà ±a que se encuentra en la base del cerebro. Esta glà ¡ndula produce hormonas que regulan la presià ³n sanguà ­nea, el crecimiento y algunos aspectos del sistema reproductivo. En algunas ocasiones ocurre el hipopituitarismo por el resultado de la disminucià ³n de los niveles de hormonas de la pituitaria. Cuando esto ocurre, puede causar trastornos en las funciones normales del cuerpo tales como la presià ³n arterial y la frecuencia cardà ­aca (Melton, s.f.). Cuando existe exceso de produccià ³n de hormonas hipofisarias, provoca una enfermedad llamada acromegalia. La misma puede causar la produccià ³n anormal de la hormona del crecimiento. Esta enfermedad se caracteriza porque algunas à ¡reas del cuerpo se vuelven mà ¡s grandes y fuera de proporcià ³n con el resto del cuerpo. Es un tipo de crecimiento excesivo que se da en las manos, pies y cara. Este crecimiento anormal surge en la edad madura despuà ©s que el proceso de crecimiento se ha parado. Si en la adolescencia se presenta gran cantidad de la hormona del crecimiento, se puede producir gigantismo (Melton, s.f.). Desequilibrios metabà ³licos Segà ºn Botanical Online (2015) el metabolismo permite funcionar, crecer y desarrollarse y realizar todas las funciones del organismo. Los alimentos producen la energà ­a mediante los nutrientes. El metabolismo tiene dos fases: Anabolismo: Tiene la funcià ³n de crear nuevas cà ©lulas, mantener los tejidos del cuerpo y crear reservas. Este tipo de proceso se conoce como metabolismo constructivo, asà ­ se forman los tejidos, los mà ºsculos o los nervios. Cuando ocurre esta fase el cuerpo gasta energà ­a. Catabolismo: Tiene la funcià ³n de descomponer los tejidos corporales y las sustancias de reserva para producir energà ­a. Se utiliza para obtener la energà ­a que el cuerpo necesita. Permite los procesos anabà ³licos como generar calor para mantener la temperatura corporal adecuada o proporcionar energà ­a que permite dar fuerza a los mà ºsculos. El metabolismo del individuo se relaciona con el peso, el apetito y los niveles de energà ­a del cuerpo. Cuando la glà ¡ndula tiroides no està ¡ activa puede causar enfermedades cardà ­acas, la fatiga y la obesidad. Cuando la tiroides produce demasiada hormona puede provocar que sea difà ­cil que una persona mantenga su peso saludable. Los trastornos en las glà ¡ndulas suprarrenales pueden producir cortisol en cantidad excesiva y causar que una persona gane peso en el à ¡rea del abdomen, esto se llama sà ­ndrome de Cushing. Tambià ©n, ocurren otros trastornos que logran niveles de cortisol mà ¡s bajos que los normales. El cortisol ayuda a mantener la presià ³n arterial, la glucosa en sangre y los niveles de energà ­a normales (Melton, s.f.). Principales procesos metabà ³licos Entre los principales proceso metabà ³licos se encuentran: la digestià ³n, que mediante los alimentos permite los procesos de creacià ³n de nuevos tejidos y el almacenamiento de las sustancias de reserva en forma de grasa corporal; la circulacià ³n de la sangre, en los cuales los nutrientes son trasportados por la sangre hasta el hà ­gado y las cà ©lulas del hà ­gado metabolizan cada sustancia para producir energà ­a. La eliminacià ³n de los productos de desecho mediante la defecacià ³n se elimina los residuos de la digestià ³n. La regulacià ³n de la temperatura corporal es la energà ­a producida por el proceso catabà ³lico genera calor que mantiene la temperatura corporal. Tambià ©n, existen otros mecanismos internos puede disminuir la temperatura corporal como el aumento del sudor o la dilatacià ³n de los vasos sanguà ­neos (Botanical Online, 2015). Desequilibrios del sistema reproductivo Segà ºn Melton (s.f.) los desequilibrios quà ­micos producidos en el sistema reproductivo pueden causar infertilidad y bajar el deseo sexual en ambos sexos. Cuando los niveles de estrà ³geno y testosterona està ¡n bajos, afecta el rendimiento sexual y la fertilidad. Los altos niveles de testosterona en los hombres pueden provocar un exceso de masa muscular. De otra parte, las mujeres con niveles altos de testosterona pueden experimentar calvicie de patrà ³n masculino y el crecimiento excesivo del pelo en la cara y el pecho. Otras mujeres pueden experimentar que su voz sea mà ¡s grave y llegar a ser mà ¡s masculino. Sin embargo, cuando los niveles de estrà ³geno son bajos en las mujeres tienen problemas con la menstruacià ³n, problemas para embarazarse y llevar el embarazo a tà ©rmino. Cuando las cantidades de estrà ³geno son excesivas, esto puede provocar cà ¡ncer de seno y otros tipos de cà ¡ncer en la mujer. Conclusià ³n El cuerpo humano està ¡ compuesto por una serie de sistemas que realizan cambios quà ­micos continuamente. Para que exista un balance, es necesario que todos los procesos està ©n sincronizados y no sufran ningà ºn desorden, ya que si existe alguno se afecta la salud de la persona. Es necesario que las cà ©lulas el cuerpo humano lleva a cabo las funciones vitales para el organismo pueda vivir adecuadamente. El cuerpo del ser humano tiene procesos que son bà ¡sicos y que producen subsistemas esenciales donde un grupo de à ³rganos coordinados realizan las funciones esenciales del mismo. Là ¡minas de los procesos quà ­micos del cuerpo REFERENCIAS Aguilar, J. E. (2011). Los sistemas fundamentales del cuerpo humano. Mà ©xico: Asociacià ³n Oaxaqueà ±a de Psicologà ­a, A. C. Botanical Online (2015). Metabolismo corporal. Recuperado de http://www.botanical-online.com/medicinalsmetabolismo.htm Melton, W. (s.f.).  ¿Cà ³mo un desequilibrio quà ­mico afecta tu cuerpo? Recuperado de http://www.ehowenespanol.com/desequilibrio-quimico-afecta-cuerpo-sobre_165852/