Trophic levels — task. Biology CBSE Live product, Class 10 (2025-26).

Choose the appropriate answer:

Which among the following true about the importance of food chain?

Note: Choose all possible answers.

Effect of non-biodegradable harmful substances can be studied through the food chain
It provides pathway for the passage of food and energy in the ecosystem
Helps in studying the effect of population reduction or increase at a trophic level
Food chains does not indicate how organisms interact

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3. Trophic levels