Question

The process of conversion of wastes into manure is called:
A) Landfilling
B) Adaptation
C) Sorting
D) Composting

Answer 1

Hint: Garbage is called the household wastes or rubbish. This garbage includes left-over food, fruit and vegetable peels, fallen leaves of potted plants, waste paper, unwanted plastic objects (plastic bottles, polythene bags, toys, etc.), glass articles, metal objects, old wooden objects, rags, discarded shoes, and sewage.

Complete answer:
Wastes are both biodegradable and non-biodegradable. If the waste is not disposed properly then it can cause environmental pollution or pollute our environment like soil, water and air.

Let us analyze the given options:
A) Landfilling – The disposal of garbage by putting in the low-lying areas of ground and then covering it with earth is termed as landfill. A big landfill site can be used to dispose of waste materials for a considerable time.
B) Adaptation – Organisms morphological, physiological and behavioral attributes that help the organisms to survive and reproduce in its natural habitat is termed as adaptation.
C) Sorting – It is a process that occurs in cells and termed as cell sorting. In this process the cells are taken from an organism and separate according to their type, size, shape, etc.
D) Composting – The method of garbage disposal in which organic waste materials get decomposed under aerobic conditions naturally. The waste is converted into compost by burying in the pit dug into ground by the help of microorganisms, and used as fertilizer or manure.

So, the correct answer is option (D) Composting.

Note: Paper cups are considered as biodegradable because they will decompose automatically by the help of microorganisms and they do not cause any harm effect on the environment while plastic cups are harmful for the environment and considered as non-biodegradable waste which remain in the environment. The best item that is used for compost is kitchen wastes – fruits and vegetables peels, tea leaves, egg shells, etc.