Human Evolution FA1302 8 December 2013 Did Climate Affect Human Evolution? Climate and environmental change has played a vital role in Earth’s history‚ and the outcome of these changes has been anything but idle in the evolution of primates. These drastic transformations in the planet’s atmosphere have been the impetus of evolution among species and has sparked interest to geologist and paleoanthropologist for years‚ resulting in a number of hypothesis that “propose that climate-driven environmental
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How does cocaine effect the body? Cocaine is a powerful and highly addictive substance. Cocaine hydrochloride remains a Schedule II controlled substance as it has some legal therapeutic applications as a pain reliever and vasoconstrictor‚ useful in association with some medical procedures. In most other cases cocaine is an illegal substance. It can be found in a number of forms such as‚ white powder‚ paste‚ or solidified and rock like‚ referred to as crack cocaine. It can provide a rapid- onset‚
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for cell phones. Among the various forms of digital communication‚ text messaging is the most popular. Teenagers send and receive more text messages than any other age group. Inquiries involving teenagers and texting have displayed that texting affects the literacy for a majority of the teens who text. Studies have identified beneficial and detrimental effects of teen texting. According to studies involving teens‚ texting has had both positive and negative effects on teen literacy. In today’s
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for its job source and for the issues that cars are being made to address. From features to production the auto industry is large and quite competitive. Today‚ most advertisements for cars highlight their efficiency in the changing environment and how the car has been improved to do less harm to the environment. The auto industry is concerned with their impact on the environment as are its consumers. There has been a global competition in the more recent decades of the industry to create the most
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CHAPTER I : STATE OF INTERNATIONAL ORDER Introduction If the last century was the famously proclaimed‚ “American Century” – this one is the Asian Century with India and China as its main players. After World war II the international order was shaped with USA and the Soviet Union as competing super-powers and the lesser powers of UK‚ France and China as adjuncts. The ideological conflict of democracy versus communism shaped the contours of the new order‚ the open rivalry between the two super powers
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How does the ocean effect the climate on land? The oceans play a huge role in the climate zones we see on land. Even the area that are nowhere close the the oceans are still effected by the ocean. The oceans act as a heater to the world because of them absorbing insolation rays from the sun. The is a result of land temperature altering faster than the oceans does. However‚ the land still absorbs some insolation but cannot maintain the same heat for as long as the ocean. Especially the tropical
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Explain how inflation affects the functions of money. Inflation is the general increase in the price level over a period of time. Money is something that is generally acceptable in the exchange of goods and services. When inflation occurs‚ the value of money decreases as the same amount of money can’t buy the same amount of products like before. The purchasing power of money decreases. If the inflation rate is high and unanticipated‚ lots of problems can occur. People can lose confidence in
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As the temperature increased‚ the enzyme activity also increased‚ however‚ only to an optimal level which was at temperature 32oC. Once the temperature was beyond the optimal level‚ the rate began to decline and this was represented by the concave curve on figure 5 and 7. This was because as the temperature increases‚ the frequency of collisions between the enzyme and the substrate also increased hence faster reaction rate. Whereas‚ the enzymes operated slowly at low temperature as there wasn’t sufficient
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According to Nielsen Media Research (1993) more than seventy percent of the Americans were access to cable television therefore most teenagers would watch these music videos from their homes. The study which was done on the composition of these videos shows that seventy five percent contain materials which are related to sex. Music videos influence sex activities in various ways. Within these videos‚ it portrays various features which are eventually being imitated by teenage girls. These features
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inaccordance with the external temperature. This correlation‚ between temperature andmovement‚ is what this experiment aims to determine. Spearman’s Rank Correlation is a nonparametric measure of statistical dependence between two variables. It assesses how well the relationship between two variables can be described using a monotonic function. If there are no repeated data values‚ a perfect Spearman correlation of +1 or −1 occurs when each of the variables is a perfect monotone function of the
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