Amolecule of carbon moves through various media during the process of its cycling. in which medium will it move the fastest? a. soil b. air c. biota d. runoff water e. oceanic water

The answer is; B

The carbon cycle exists in the atmosphere mainly as carbon dioxide. The levels of carbon dioxide change can change dramatically over years.  The movement in and out of carbon in the atmosphere  is fast and influences by factors such as combustion and photosynthesis. The former increases carbon in the atmosphere whole the latter decreases it.

9.9 years

a = p(1 + rt) . . account balance after time t at rate r starting with principal p

3000 = 2500(1 + 0.0202t) . . filling in the given numbers

1.2 = 1 + 0.0202t . . divide by 2500

0.2 = 0.0202t . . . subtract 1

0.2/0.0202 = t ≈ 9.901

it will take about 9.9 years for the account balance to reach $3000.

the answer is otpion c) understanding

he wants to be heard one more time. he wants to be understood. he needs the truth one more time.