It is also a fact that the earth is over 5 billion years old. You cannot prove the earth is 20,000 years old, however you can prove with technology that the earth is 5 billion years old.
This does not state that all evolutionary changes must be usefull.
No, but they cannot be detrimental either. The loss of hair in an ice age, etc. would be rather damaging to the organism as are many other changes that science has conjured up over the years
we have a thin layer of hair, hardly enough to conserve heat by any manner. Take off your clothes and run around the tundra a while, you'll see what I'm talking about
we have a thin layer of hair, hardly enough to conserve heat by any manner. Take off your clothes and run around the tundra a while, you'll see what I'm talking about
Evolution is why we are here. The earth is billions of years old. The earth rotates around the sun. The earth is round. Gravity is why we don't float into the sky.
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