a decrease in temperature a decrease in biodiversity an increase in the number of predators an increase in the number of decomposers
Leaves fall from deciduous trees onto the forest floor. These leaves decay slowly and become part of the topsoil. Which change is most likely to have a positive impact on the nutrients available in the topsoil?

Options:
- a decrease in temperature
- a decrease in biodiversity
- an increase in the number of predators
- an increase in the number of decomposers

an increase in the number of decomposers