Answer:
Evolution is is the change in the characteristics of a species over several generations and relies on the process of natural selection. it is reffered to as a theory because it is an incontrovertible fact that organisms have changed, or evolved, during the history of life on Earth.
Explanation:
A. It is present in all organisms and atmosphere.
The correct answer would be the nucleus.
Hope this helped :)
2 is the nucleus of the cell. number 3 is the mitochondria and 1 is the golgi apparatus i’m pretty sure
