A) micro-organisms
B) food crop
C) green vegetation
D) herbivores
Correct Answer: C
Solution :
Effect of pollution is observed first on green vegetation. Micro-organism is a living organism too small to be seen with the naked eye, includes, bacteria, fungi, Protozoa and microscopic algae, also includes viruses. Herbivores are those organisms, which eat only grass, eg, grasshopper.
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