1 and 3 is right. 2 and 4 aren't really true.
When acid rain falls, aquatic animals get affected due to the spreading of acid rain which harms and destroy wildlife, it can reach to aluminum and then to soil, which basically destroys the ecosystem of the aquatic animals.
Answer:
Point mutations can cause serious changes to an organism if they change the way a protein works. A mutation in DNA alters the mRNA, which in turn can alter the amino acid chain. ... And a base substitution can also cause a silent mutation, in which the protein's function doesn't change at all.
yes when a earthquake is greator than 6 is close nearby
Explanation:
B. is the answer because the nervous system send nerves down your body telling your hand to move its a reaction to the pain of the hotness your felling
