Which biotic component primarily helps in the cycling of nutrients in an ecosystem?

Choose the correct sentences from the options:
$(1)$ Decomposition is largely an oxygen-requiring process.
$(2)$ Warm and moist environment slows down the decomposition process.
$(3)$ Decomposition rate is slower if detritus is rich in lignin and chitin.
$(4)$ Humus is colloidal in nature and it serves as a reservoir of nutrients.

Which of the following are included as decomposers?

The process by which earthworms break down detritus into smaller particles is called ......

Which of the following acts as $''$nature's scavengers$''$?

In the carbon cycle,bacteria are essential as: