How is acid rain harmful to animals and plants?

How acid rain is so harmful to animals and plants is that most living creatures need water to live but acid rain is pollution and if that gets in a plants, or animals water supply they either drink or absorb it, and because of the pollutants and chemicals that are in acid rain it can cause digesting problems to animals, and growing problems to plants. Also if a plants absorbs the acid rain, and an animal eats them it will surely kill them in a short while