The gradual warming up the Earth is called Acid warming. alogbl destroys trees and kills fish in lakes. ianr Many factories dump dangerous Burning things releases Huge areas of tropical rain The exhaust fumes from cars and lorries cause serious world. (llutionpo) straight into the sea. (michecals) dioxide into the atmosphare. (boncar) are dissappearing every year. (orestf) in many cities around the