Which could be both a natural and a human source of air pollution forest fires, vehicle exhaust, factory emissions?

How do environmental factors influence genetic traits? a. environmental factors determine all genetic traits. b. environmental factors can determine if a genetic trait becomes a health issue. c. environmental factors are determined by genetic traits. d. environmental factors have no influence on genetic traits. select the best answer from the choices provided

Robert wants to know which fertilizer will work the best for his grass. what can he do to explore this inquiry?

What is the cause hearing loss in human being