Explain how harmful chemicals enter our bodies.

Accumulation of harmful chemicals in our bodies can be avoided. Explain how this can be achieved ?

Assertion: Food chain is responsible for the entry of harmful chemicals in our bodies. Reason: The length and complexity of food chains vary greatly.

How do harmful chemicals enter the food chain ?

Harmful chemical present in tobacco is

Name the process in which a harmful chemical enters the food chain and gets concentrated at each trophic level.

Name the process in which a harmful chemical enters the food chain and gets concentrated at each level in the food chain.