A) ecosystem
B) Phytosociology
C) biotic community
D) Ecology
Correct Answer: D
Solution :
The study of reciprocal relationship between organisms (animal) and their environment is called ecology. Biotic community is a group of population of different species in a given area. It may include all the plants, animals and micro-organisms of that area. Ecosystem is a whole biotic community in a given area plus its abiotic environment. It includes the movement of energy and nutrients among the abiotic and biotic components of ecosystem.
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