Natural Selection
Natural Selection Defined: The process by which forms of life having traits that better enable them to adapt to specific environmental pressures such as predators, changes in climate, or competition for food or mates, will tend to survive and reproduce in greater numbers than others of their kind, thus ensuring the perpetuation of those favorable traits in succeeding generations.
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Human evolution occurred because as the climate was changing, we were forced to adapt and learn to live in the environment. Humans, animals, and all plant life either learned to adapt or died off. Some animals flourished as the climate changed, when Africa grew dry some plants couldn’t survive. Human evolution occurred by us and different species learning how to survive. We learned to adapt and was to continue living as the climate was continuously changing.
Humans had traits that could and would flourish in all environments, especially the ones that were made to walk on two legs. Looking at the bones that have been retrieved from Africa it shows how our braincases were once like apes and soon grew larger as our facial structure grew smaller. The people that had the smaller brain cases seemed to have died off. This being because their traits for living in Africa didn’t help them.
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As the climate changed, and the grassses grew longer, and the weather hotter so did the humans that lived in africa 6-2 million years ago. They had to adjust to the climate and while only the smartest and the ones that could change and adapt to the environment could survive. Some that were smarter and stronger could learn to hunt and make tools to do so. The ones that couldn’t adapt to the changing climate and weather, died off or were killed by the animals that lived in the climate.
"Climate and Human Evolution." Climate and Human Evolution. Smithsonian Institution, 24 Feb. 2015. Web. 25 Feb. 2015.
"Darwinian Selection Continues to Influence Human Evolution." Darwinian Selection Continues to Influence Human Evolution. Phys.org, 26 Feb. 2013. Web. 26 Feb. 2015.
"Natural Selection Has Strongly Influenced Recent Human Evolution, Cornell/Celera Genomics Study Finds | Cornell Chronicle." Natural Selection Has Strongly Influenced Recent Human Evolution, Cornell/Celera Genomics Study Finds | Cornell Chronicle. N.p., n.d. Web. 24 Feb. 2015.
"Natural Selection." Natural Selection. N.p., n.d. Web. 26 Feb. 2015.
"Natural Selection." Natural Selection. N.p., n.d. Web. 26 Feb. 2015.
"Natural Selection." Natural Selection. N.p., n.d. Web. 26 Feb. 2015.
Than, By Ker. "Darwin's Natural Selection Still at Work in Humans." LiveScience. TechMedia Network, 02 Nov. 2005. Web. 24 Feb. 2015.
"Darwinian Selection Continues to Influence Human Evolution." Darwinian Selection Continues to Influence Human Evolution. Phys.org, 26 Feb. 2013. Web. 26 Feb. 2015.
"Natural Selection Has Strongly Influenced Recent Human Evolution, Cornell/Celera Genomics Study Finds | Cornell Chronicle." Natural Selection Has Strongly Influenced Recent Human Evolution, Cornell/Celera Genomics Study Finds | Cornell Chronicle. N.p., n.d. Web. 24 Feb. 2015.
"Natural Selection." Natural Selection. N.p., n.d. Web. 26 Feb. 2015.
"Natural Selection." Natural Selection. N.p., n.d. Web. 26 Feb. 2015.
"Natural Selection." Natural Selection. N.p., n.d. Web. 26 Feb. 2015.
Than, By Ker. "Darwin's Natural Selection Still at Work in Humans." LiveScience. TechMedia Network, 02 Nov. 2005. Web. 24 Feb. 2015.