DENDROLOGY

Detailed explanation-1: -Bacteria and fungi are called decomposer because they break down the dead and decaying organic matter into a simpler substance. It provides the nutrients back to the soil.

Detailed explanation-2: -Saprotrophs are organisms that break down dead matter. Examples of decomposers: fungi, bacteria, earthworms, insects. Examples of detritivores: millipedes, earthworms, crabs, flies, etc. Examples of saprotrophs: fungi and bacteria.

Detailed explanation-3: -When plants and animals die, they become food for decomposers like bacteria, fungi and earthworms. Decomposers or saprotrophs recycle dead plants and animals into chemical nutrients like carbon and nitrogen that are released back into the soil, air and water.