Which of the following correctly describes the flow of carbon in the carbon cycle? a. Air ---> animals ---> plants
b. Plants ---> animals ---> air
c. Air ---> fossil fuels ---> animals
d. Fossil fuels ---> plants ---> animals

(b) Plants ---> animals ---> air.

Since the cycle begins with the process of Photosynthesis as carbon dioxide is absorbed then becoming Carbon compounds. These are taken by primary consumers passed to secondary consumers then to tertiary consumers.

Then three processes takes place (respiration, Decomposition and Combustion) finally carbon dioxide is given out again.

I hope u understand.

the answer is lactic acid from anaerobic respiration. the acid in lactic acid is what creates sore and burning muscles. if you think about how acid burns that will give you a clue for questions like this.