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Q.
Mr. X is eating curd/yoghurt. For this food intake in a food chain he should be considered as occupying
Ecosystem
Solution:
Mr. $X$ eating curd/yoghurt should be considered as occupying third trophic level. Producers or green plants (first trophic level) are consumed by herbivores (second trophic level) and from them curd/yoghurt (made from dairy breed) is consumed by third trophic level organisms like man.
