So i have a question that says what is the ph of acid rain and i got the answer to that (using science book) but it wants me to tell why it is important (for a weathering paper)

For living organisms to live.

Explanation:

There are level restrictions for acid and alkali. Acid's level shouldn't be too high since it might damage the environment by polluting the waters, and polluting the soil, which we grow crops in. The crops might be dangerous and poisonous to eat.

1) gene flow

- it is described as the transfer of genes from one population to another population so that frequency of gene is increased.

-a zebra migrates to join a different herd of zebras.

2) natural selection

- a mechanism of evolutionary change in which individuals with advantageous traits survive and reproduce whereas the others ( those that can not adapt) eliminate from the population.

-competition for sunlight leads to taller trees.

3) mutation

- permanent change in the nucleotide sequence of dna ( genetic material) that could have harmful or useful consequences.

-the dna of a snake changes to make its venom stronger.

4) genetic drift - it is a random phenomenon ( that occurs by chance such as fire) that results in change in the gene frequency in a small population.    

-a grassfire randomly sweeps through a population of buffalo and kills most of the animals.

explanation:

a

explanation: