A. Producers
A.
B. Consumers
B.
C. Decomposers
C.
D. Atmosphere
D.
Correct Answer: D
সঠিক উত্তর: D
Explanation
ব্যাখ্যা
An ecosystem consists of biotic components (producers, consumers, decomposers) and abiotic components (air, water, soil, temperature). Atmosphere is not a direct part of a specific ecosystem.