Darwin's theory of evolution started with the natural selection. When he thought that a mammal can turn into a whale. He used black bears as an example,becase they were able to swimt and catch food in the water. Few years later,scientists figured out that his theory was not wrong,he just choosed the wrong animal. He should choose instead of bears hippos or cows to make this experiment happen.
His theory of evolution by natural selection is supported by lot of sources and that's why it is one of the best theories in the world. Natural selection is a process by which organisms change over time in physical or behavioral traits. These are very often changes that help organism to better adapt in its environment.
The physical and behavioral changes that make natural selection possible happen are based on the level of DNA and, ofcourse, genes. These changes are called mutations. Natural selection quides the evolutionary process by adding the good mutations and deleting the bad ones.
Žiadne komentáre:
Zverejnenie komentára