Producers,consumers,and decomposers are which type of components of an ecosystem?

Explain how harmful chemicals enter our body. Write the name given to such a phenomenon.

Which trophic level has the highest energy in an ecosystem?

Flow of energy in an ecosystem is always

In any food chain,an average of $10 \%$ of the food eaten is turned into the body mass of an organism and made available for the next level of consumers.

List two man-made ecosystems.