can you give me a list of 5?
an example is like polluted/contaminated water and the solution is that they may make a device that can clean the water for people to use.|||Air Pollution -factories and cars that promote less exhaust and smoke
Noise Pollution- airplanes and other machines that are not as loud
Runoff- some kind of barrier that protects the water from being polluted from runoff
Better ways to dispose of garbage
Extinction of Animals: hunting laws, barriers, zoo plans|||a buttload of diseases
an asteroid on its way to hitting earth
a tree fallen in the middle of the road could need a forklift to pick it up
订阅：
博文评论 (Atom)
没有评论:
发表评论