Which of the following statements best characterizes the risk of ground-level ozone and air pollution?
a.
it contaminates the food supply.
b.
it contaminates the water supply.
c.
it is very harmful to human health.
d.
it disrupts the food chain in lakes.

the answer is c it is very harmful to human health

answer; i believe that the correct answer is (financial and technology);

the answer would be the third option, "no, ariel should have added 9^2 and 12^2 and compared that to 15^2."

this is found through the pythagorean theorem, which is a^2 + b^2 = c^2.

this is the correct way of solving the problem:

9^2 + 12^2 = 15^2

81 + 144 = 225

225 = 225