This is the kind of pollution cars, buses, and planes can produce and among other things, can cause allergies in people.
What is air pollution?
Red, orange, yellow, green, blue, indigo, violet are the ordered colors in this atmospheric phenomenon.
What is a rainbow?
Recycling 1 short ton (0.91 t) of paper saves 17 of these.
What are trees?
This is the "R" in "the 3 R's" that means to use lessen the amount of something you use.
What is reduce?
Out of bicycles, motorcycles and boats, this is the most environmentally friendly way to travel.
What is bicycles?
This is the "R" in "the 3 R's" that means to use something more than once, maybe in a different way than the first time.
What is reuse?
This is the general name of chemicals which are used on crops and plants to keep insects and fungi away.
What are pesticides?
This "R" in "the 3 R's" means to dispose of a material in the proper bin so it can be taken to a factory to be turned into something that can be used again.
What is recycle?