Provide your best answer for the following question. Give ONLY the answer, no other words or explanation.
For example:

Answer: <most likely answer, as short as possible; not a complete sentence, just the answer!>.

The question is: Many bacteria are decomposer organisms. Which of the following statements best describes how these bacteria help make soil more fertile?
The bacteria break down plant and animal matter.
Decompose organic matter, releasing essential nutrients.