Assertion : Scavenging improves the environment .
Reason : A scavenger disposes of dead organic matter .

Assertion : Decomposers keep the environment clean. Reason: They recycle matter by breaking down the organic remains and waste products of plants and animals.

Humus layer is soil composed of dead fresh organic matter called

Assertion : Most fungi are saprophytic in their mode of nutrition. Reason : They absorb organic matter from dead substrate.

Assertion (A): Decomposers keep the environment clean. Reason (R): They recycle matter by breaking down the organic remains and waste products of plants and animals.

Fungi and bacteria, which feed on dead organic matter are called