Which is a source of land pollution? heavy traffic producing large amounts of exhaust
mold growing on an indoor windowsill
people smoking tobacco outside a building
fertilizer running off from a large agricultural farm

Darren was recently ticketed for speeding over 110 mph on the freeway. when the police officer stopped darren and asked him why he was going so fast, he replied that he was "king of the world." the month before this, darren felt sad and listless and had trouble getting up the energy to go to school. he probably suffers from:

Increased use of cocaine can reduce the period of stimulation. true or false

Can someone give me one specific health problem, and explain it. !