INDIAN GEOGRAPHY

Detailed explanation-1: -Humus is dark, organic material that forms in soil when plant and animal matter decays. When plants drop leaves, twigs, and other material to the ground, it piles up. This material is called leaf litter. When animals die, their remains add to the litter.

Detailed explanation-2: -Humus is the dead and decaying bits of animals and plants present in the topmost layer of soil.

Detailed explanation-3: -Humus, which ranges in colour from brown to black, consists of about 60 percent carbon, 6 percent nitrogen, and smaller amounts of phosphorus and sulfur. As humus decomposes, its components are changed into forms usable by plants.

Detailed explanation-4: -The correct option is B Top soil. The uppermost layer of the soil is called topsoil and this layer contains humus, plant roots, and living creatures.

Detailed explanation-5: -Defiinition of decomposer: 1 Mark Microorganisms in forest feed upon the dead plants and animal tissues and convert them into a darkbrown or black organic coloured substance called humus. The presence of humus ensures that the nutrients of the dead plants and animals are released into the soil..