Suggest one word for each of the following statements/ definitions

(a) The physical and biological world where we live in

(b) Each level of food chain where transfer of energy takes place

(c) The physical factors like temperature, rainfall, wind and soil of an ecosystem

(d) Organisms which depend on the producers either directly or indirectly for food

(a) Ecosystem

Ecosystem is made up of biotic as well as non-biotic components. So, the physical and biological world where will live in Ecosystem.
(b) Trophic level

Trophic level are the various levels in the food chain in which one organism is eaten by another. These levels are termed as trophic level.

(c) Abiotic factors

Since Temperature, rainfall, wind and soil of an ecosystem are non-living things and therefore known as abiotic factors.

(d) Consumers

Consumers are the organisms which directly eat the food produced by producers or they indirectly feed on the other consumers.