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According to Charles Darwin's theory of natural selection, preferable genes are favored by nature in the gene pool, and ..

Some of the body movements can be controlled at will, others cannot. The body has a motor program, which is the pattern ..

Obtaining air outside an aquatic environment required species to acquire suitable adaptations, and this was the case of ..

If New Zealand has lots of unique animals, it's also got a whole lot of unique plants. Find out more about some of them,..

The gastrointestinal system breaks down particles of ingested food into molecular forms by enzymes through digestion and..

Hormones are chemical messengers produced by specialized glands and they were produced by switching on the genes designe..

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