There are actually 4 types of carbohydrates: -glucose, for immediate energy [BOTH PLANTS AND ANIMALS] -glycogen, short-term energy storage [ANIMALS] -starch, short-term energy storage [PLANTS]...
I am guessing Noice... lol. Mainly it has to be the sun as it supplies the energy which keeps us moving and then we cause noice pollution. If you are asking for a school project then the answer may...