Why can the use of fertilizers, pesticides, and industrial chemicals unintentionally harm a community's water supply?

Run off

Explanation:

The top soil can produce runoff if it rains heavily and travel with the water. The pesticides in the water are harmful to our body when consuming it. The pesticides are in the topsoil, therefor when the soil runs into the water system it is now contaminated with pesticides.

"a.) well–developed vascular system."

producers: apple trees, potatoes, carrots, grains, acorns, cabbage, grass, corn, lettuce

consumers: deer, mice, rabbits, chickens, squirrels, horses, worms, cows

predators: eagles, frogs, wolves, owls