to recycle nutrients into soil to convert solar energy into food to provide food for secondary consumers to compete with secondary consumers for oxygen
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Food webs show feeding relationships among different types of organisms. Those organisms each have a specific niche. Which of the following best describes a function of decomposers in food webs?
Possibilities:
- to recycle nutrients into soil
- to convert solar energy into food
- to provide food for secondary consumers
- to compete with secondary consumers for oxygen

to recycle nutrients into soil