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Evolution by Natural Selection

It can be observed just by looking at the nature. Predators have their eyes looking directly to front, because they need to see the pray and follow it. Prays such as deer, buffalo etc. Have their eyes sideways becauae they have to see any predator coming from any direction.

This can only be explained by natural selection. The ones who has the best adaptation live, others die and their genes are removed from gene pool.