the spread of disease the availability of water the recycling of nutrients the distribution of organisms
I gave my students this multiple choice question: The complete removal of decomposers from an ecosystem will have the greatest effect on which of the following?

Only one answer is correct among these 4 choices:
- the spread of disease
- the availability of water
- the recycling of nutrients
- the distribution of organisms

Could you tell me which one is correct?

the recycling of nutrients