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Showing posts from July, 2017

Human Variation

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High altitudes disrupts homeostasis in that it can limit a person's’ ability to accomplish easy tasks, such as walking or climbing, can cause dehydration, and can cause hardships in breathing. This is due to the fact that in higher altitudes, the atmosphere is less dense, therefore the molecules are farther apart, making it more difficult to breath. In higher atmospheres as well, our heart has to do twice the work in order to get oxygen into our lungs, which can be a lot of stress for some people and make them feel fatigued.  1. Short Term A short-term adaptation would be when our heart pumps harder in order to get oxygen into our lungs. Image #1 Facultative A facultative adaptation would be “the increase of oxygen carrying blood cells.” This is an adaptation that occurs genetically and this trait will continue as long as someone needs it when living in high altitude habitats. Developmental: One way humans have adapted to high altitude would be by “dev...

Piltdown Hoax

The Piltdown fossil was found around 1907 in England and presented to the world in 1912, but it later turns out that it was a hoax and Charles Dawson was the one responsible. It was not until 1953, that scientists realized it was a fraud.  It was only when a scientist at the University of Oxford used their new technology to discover that the bones were different ages.  The “supposed” scientific significance would have been that it would supported the hypothesis that humans evolved from apes. The response from the science community was diverse where some believed that the fossil was genuine, while others criticized it because they were not sure that the jawbone and the skull belonged to the same creature.     Some of the faults that contributed to the negative impact to the scientific process was greed, jealousy, and pride. In Germany, Spain, and France, many Neanderthal (evidence of early man) were being discovered in large quantities and Britain was starting...

Analogous Species

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Bats are in the mammal group, and not birds, even though they both have wings and are capable of flight. Both of them obtained their wings through many years of natural selection, but this occurrence occurred individually in each lineage; therefore although both wings share a similar purpose, their bone structure is different. Bats and birds do not have a common ancestor from their wings, but they do have a common ancestor from their forelimbs. Analogous means that the trait has a similar purpose, but different origin, while homogony is vice versa. Homogeneity means that the traits have different purposes and look different, but have the same origin. Works Cited Homologies and analogies . N.p., n.d. Web.