Multiple choice

When organisms die, ________ break them down and return their carbon to the atmosphere.

  1. Producers

  2. Decomposers

  3. Pioneer species

  4. Climax communities

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Decomposers, such as bacteria and fungi, break down organic matter from dead organisms. This process releases carbon back into the soil and atmosphere, completing the cycle.