At Various Times In The Geological Past Essay

At Various Times In The Geological Past Essay At Various Times In The Geological Past Essay â€Å"At various times in the geological past, many species have become extinct as a result of natural, rather than human, processes. Thus, there is no justification for society to make extraordinary efforts, especially at a great cost in money and jobs, to save endangered species." Extinction of species in the geological past might be due to natural phenomenon but the present is quite different. Although natural phenomenon, like floods, landslides, earthquakes are potent to cause extinction of species, with improvement in technology and advancements in research field humans have become invasive enough to effect the same. For eg. habitat destruction, hunting , use of toxic chemicals, industrialization all account for extinction of species. Also, global warming and acid rains are natural processes which are effected by humans. Global warming leads to climatic and temperature changes and ultimately may cause floods leading to loss of various species. Even Acid rain is adversely affecting many plant species and accelerating their loss. Being the most active and intelligent animal on Earth it’s our responsibility to maintain the ecological equilibrium. Each species is dependent on every other species for its survival. And many of them form important links in the nature’s cycles. If those links are lost the nature’s harmony will be disrupted. One must not forget, Humans themselves rely on other species to fulfill their basic needs as well as extravagant desires. Various products like

Population growth and the degradation of the environment Essay

Population growth and the degradation of the environment - Essay Example In our case this is because the relationship between human population growth and wildlife extinctions is not always direct. We are a species with an insatiable appetite for resources, and we sometimes use them irresponsibly. Thus, it could be argued, what we do and how we survive may be more important to our impact on other species than the simple effect of our great numbers. Thus we need solid evidence to establish that, over the broad sweep of time, there is a close tie between the simple count of people on the planet and the diminishing count of other species. In other words, the impact of our large population would be great even if we were to behave differently. If there is such a link, then it is particularly frightening, for there are now over six billion people on the planet. Nature has been "comparatively sparing" in the space and resources necessary to support both wildlife and a human population. Malthus was the economist who warned us in 1798 that the human population would grow more quickly than the resources necessary to sustain it. Now I know that Malthus and his ideas have been much maligned over the years by optimists who see no problem with human population growth. Thus in 1998, the two hundredth anniversary of his publication went almost without notice. The following year, the milestone number of A.D. 2000 got much more press than another milestone number: six billion, the number the human population reached sometime midway through the year. Granted, both are arbitrary numbers. But to a few of us concerned scientists, the population milestone was far more frightening than the computer glitches predicted for "Y2K." Y2K had almost no effect; the six billion figure has a lasting and growing impact. Yet few people noticed the milestone, and even f ewer cared. Human population growth is outstripping resources, especially as it relates to the sustainability of earth's biodiversity. As Ohio novelist and conservationist Louis Bromfield put it in 1947, "The bitter truth is that we are having our noses rubbed in Malthusian theory." It is even truer today than it was then, for our population Human population growth is outstripping resources, especially as it relates to the sustainability of earth's biodiversity. As Ohio novelist and conservationist Louis Bromfield put it in 1947, "The bitter truth is that we are having our noses rubbed in Malthusian theory". It is even truer today than it was then, for our population size has since doubled. Many of the world's population live in poor countries already strained by food insecurity; inadequate sanitation, water supplies and housing; and an inability to meet the basic needs of the current population. These same countries are also among the fastest growing places in the world. A large proportion of these populations are supported through subsistence agriculture. As populations grow, competition for fertile land and the use of limited resources increases. The people living in these countries are also moving toward a greater standard of living, perhaps matching the lifestyles of the more developed countries whose current consumption patterns and resource use are not necessarily sustainable. Quite simply, if we want to conserve biodiversity on earth, the most important conservation measure we can take is to slow or halt the growth of the human population. Frankly, a reduction in numbers from six billion may even be desirable. Now

Answers For Final Essay Example | Topics and Well Written Essays - 750 words

Answers For Final - Essay Example The freedom that they long for is bleak. However, the author (Luther Para 6) gives the hope through his dream that the situations will change in future across the entire nation. The sons of the oppressed and the oppressors will one day embrace each other. There is hope that racial segregation and discrimination will come to an end and freedom and justice will in turn reign across the nation. He hopefully asserts that freedom will prevail across all the races, religion, and every individual will embrace each other irrespective of the dynamics and differences between them. The author uses division and analysis method to illustrate his opinion and perception to the audience. For an instant, he has divided his all his dreams of the American population in reference to the injustices and practices after which he analyses the implications of the consequences of each dream. For example, he dreams on the day, the Mississippi state known for sweltering heat of injustice and oppression will be transformed into a state characterized by an oasis of justice inclusive of freedom. The other method the author employs is the use of argument and persuasion. Luther explains the predicaments of the oppressed black community and the tribulations that they are undergoing such as being exile in their mother country. However, despite these challenges, he provides hope to them and urges them to soldier on with the preemption that they are definition the future of their generation. Brady on her literature titled I want a wife attempts to explain the role of a women in the perspective of a man’s opinion. The character in the literature explains the reasons he wants a wife and he is he derives an encouragement from his recently divorced friend who despite his marriage predicament is also searching for a wife (Brad Para 3). The main character in need of a wife

Global Stratification Essay Example for Free

Global Stratification Essay Please choose one example of a third world country that was colonized (like Jamaica) and apply one of the theories learned in this week (i. e. world system theory, neo-colonialism, culture of poverty, etc. ) to analyze its economic conditions. Answers: North Korea is the only country of socialistic type which didn’t take any steps to change its regime in favor of democratic or market economy during the second part of the 20th century. The country exists for more than half a century but the last 10 years it exists in the conditions of economic crisis because of economic isolation. North Korea is characterized by extremely low GDP less than 1000 dollars per capita. Therefore, the country is one of the Third World nations. The main reason North Korea is a Third World nation is that it is one of the fewer countries which still practice communism in the globe. North Korea rejects capitalism and is closed from the rest of the world. People are suffering, despite the fact that North Korea is considered the forth group of nation in the World System Theory. When Communism was proved to be inefficient, the economy of North Korea collapsed. Moreover, North Korea keeps isolating itself from globalization of capitalism; its economic situation will less likely to improve. Apart from the natural drawbacks of the communism, Culture of Poverty also plays its role in the worsening situation of North Korea. As far as people in North Korea are so poor that they didn’t even have enough food to consume, they would not take any risks to take any steps to improve their lives. Also, the consequences of violating the governmental could be fatal. Thus North Korea perpetuates poverty from one generation to the next generation. Meanwhile despite the hunger and natural disasters the Korean system hasn’t â€Å"exploded† yet.

Human Cloning Should be Permitted Essay -- Human Cloning Essays

Human Cloning Should be Permitted What would you say if I told you that scientists had just developed a new procedure that could lead not only to the cure for cancer, but would provide an unlimited source of organ donors and could lead to the first effective treatment of nerve damage? Now adding on to this scenario lets say that our government was taking action to ban this new procedure because of a few myths and some loud mouthed conservatives. This scenario is true and is taking place with human cloning at this very moment. If you don't act fast this crowning achievement of medical science could be lost forever. "This procedure will be both a contribution to science and a betterment of the human race." Human cloning will provide unlimited benefits to our species and should be legal. This paper is intended to educate you to the many benefits of human cloning before it is banned due to ignorance. Now before you read any further I would like to ask you to forget any myth, legend or science fiction that you might have heard about cloning. The cloning of humans could be the greatest achievement of medical science, it could lead the way to the solution to some of humanity's greatest problems. Every year hundreds of thousands of Americans die from cancer making it the second most common cause of death in the united states. However, through cloning and other forms of genetic research scientists are all ready learning all kinds of important information about the genetic make up of cancer and before long we may have the cure for cancer. Though the cure for cancer is reason enough not to ban cloning it is by no means the only benefit this new technology could create for the medical field. With human cloning ... ...d benefits come from a field of research and in order for our society to better itself through science we must be open minded to new ideas and procedures and be so quick to ban them before we have the chance to truly let the benefits come forth. Human Cloning is possibly the answer to some of our eras toughest scientific problems and should by no means be stopped before we even learn what it can do. I have already told you many reasons why cloning should be legal and I hope you have gained a better understanding of this remarkable new procedure. The evidence I have presented is certainly more than enough reasons to support human cloning. however, my strongest argument is the look of pain and anguish on the face of parents who have just lost a child. I think that if human cloning can save the life of just one of these children then it is a worthwhile endeavor.

Anatomy Unit 6 Study Guide

Unit 6 Study Guide 1. The types of muscles are smooth, cardiac, and skeletal. 2. The muscle is made up of myofibrils that allow for muscle contraction. 3. The parts of the myofibrils that allow for it to extend out are called the sacomere. 4. The nerve cell that connects to several muscle fibers called a motor neuron. 5. The thick ones are protein myosin. The thin ones are protein actin. 6. The chemicals that stimulate the muscle to contract are called neurotransmitters 7. Acetylcholine contracts the muscles. 8. Acetylcholines are stored at the end of each motor neuron. . The combination of the motor neuron and the muscles it controls are called a motor unit. 10. The energy storing molecule found in the mitochondrion is ATP (adenosine triphoshate). 11. If there is a lack of ATP then there will be muscle cramps. 12. The chemical that builds in the muscle caused by strenuous exercise is lactic acid. 13. The pigment that causes blood to be red is hemoglobin. 14. The pigment that causes the muscles to be brown is myoglobin. 15. The discoloration and swelling in a muscle strain is caused by ruptured blood vessels. 16.After death where ATP decreased and muscles cannot relax the body then rigor mortis will take place. 17. A contraction then sudden relaxation of a muscle caused by a single stimulus is called a twitch. 18. The delay between the time the stimulus is applied and the time the muscle responds is called latent period. 19. Partially inflamed and swollen tendons are called tendonitis. 20. The immovable end of the joint is called the origin. 21. The movable end of the joint is called the insertion. 22. Muscular dystrophies is inherited disorder which causes the collapse of muscles. Anatomy Unit 6 Study Guide Unit 6 Study Guide 1. The types of muscles are smooth, cardiac, and skeletal. 2. The muscle is made up of myofibrils that allow for muscle contraction. 3. The parts of the myofibrils that allow for it to extend out are called the sacomere. 4. The nerve cell that connects to several muscle fibers called a motor neuron. 5. The thick ones are protein myosin. The thin ones are protein actin. 6. The chemicals that stimulate the muscle to contract are called neurotransmitters 7. Acetylcholine contracts the muscles. 8. Acetylcholines are stored at the end of each motor neuron. . The combination of the motor neuron and the muscles it controls are called a motor unit. 10. The energy storing molecule found in the mitochondrion is ATP (adenosine triphoshate). 11. If there is a lack of ATP then there will be muscle cramps. 12. The chemical that builds in the muscle caused by strenuous exercise is lactic acid. 13. The pigment that causes blood to be red is hemoglobin. 14. The pigment that causes the muscles to be brown is myoglobin. 15. The discoloration and swelling in a muscle strain is caused by ruptured blood vessels. 16.After death where ATP decreased and muscles cannot relax the body then rigor mortis will take place. 17. A contraction then sudden relaxation of a muscle caused by a single stimulus is called a twitch. 18. The delay between the time the stimulus is applied and the time the muscle responds is called latent period. 19. Partially inflamed and swollen tendons are called tendonitis. 20. The immovable end of the joint is called the origin. 21. The movable end of the joint is called the insertion. 22. Muscular dystrophies is inherited disorder which causes the collapse of muscles.

Dynamic Equilibrium Definition (Chemistry)

A dynamic equilibrium is a chemical equilibrium between a forward reaction and the reverse reaction where the rate of the reactions are equal. At this point, the ratio between reactants and products remains unchanged over time. For elementary reaction, the equilibrium constant may be expressed in terms of the rate constant. For the reaction: A â‡Å' B The equilibrium constant K is: K [B]eq / [A]eq Source Atkins, P.W.; de Paula, J. (2006). Physical Chemistry (8th. ed.). Oxford University Press. ISBN 0-19-870072-5.