Q40 of 167 Page 210

The human species has genetic roots in:

Africa

This is because studies show that human and Modern African Ape shared a common ancestor millions of years ago. So, humans are believed to have evolved in Africa.

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38

"Only variations that confer an advantage to an individual organism will survive in a population". Do you agree with this statement? Give reason for your answer.

 39

In evolutionary terms, we have more in common with:

 41

Which of the following gas was not present in early earth atmosphere?

 42

A gradual change, over a long period, in a form of life is known as :