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

(N/A) Environment: The surroundings or conditions in which a person,animal,or plant lives or operates.
$(b)$ Trophic level: Each step or level in a food chain where energy transfer occurs.
$(c)$ Abiotic factors: The non-living chemical and physical parts of the environment that affect living organisms and the functioning of ecosystems.
$(d)$ Consumers: Organisms that cannot produce their own food and must eat other plants or animals for energy.