The cause of DNA mutations is exposure to radiation from the sun and the effects of the DNA mutations are harmful mutations cause genetic disorder or cancer, changes gene's instruction for
The cause of DNA mutations is exposure to radiation from the sun and the effects of the DNA mutations are harmful mutations cause genetic disorder or cancer, changes gene's instruction for making protein causing malfunction.
I believe they cannot start with big trees and bushes because the there is not enough nutrients in the soil, so instead pioneer species pave the way for primary succession.
