A) food-chains and webs
B) energy flow
C) materials cycles
D) viruses.
Correct Answer: B
Solution :
: The processes operating in the ecosystem are metabolic processes of the organisms, energy flow within the ecosystem and biogeochemical cycling of minerals. All these processes maintain the. dynamic equilibrium between the biotic and abiotic components within an ecosystem. Main source of energy is sun. This light energy is converted into chemical energy by autotrophs. Later this energy is converted to kinetic energy by herbivores and omnivores etc.
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