Which process results in the release of carbon

- Animals break down food molecules to obtain energy.

- The remains of producers are broken down by decomposers.

- The remains of consumers are broken down by soil decomposers.

Explanation:

Animal breaks down food by doing cellular respiration that will produce CO2 that released into the atmosphere. The process of break down by decomposer should be similar. 

Producer or plants will take CO2 to do photosynthesize and makes sugar, not releasing it. 

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.