1. Accumulation of non-biodegradable pesticides in the food chain in increasing amount at each higher trophic level is known as (a) eutrophication (b) pollution (c) biomagnification accumulation

• Soln:

Answer is (c) biomagnification

Explanation:

• Eutrophication is richness of nutrient beyond optimum Eutrophication occurs due to run off from land.
• Introduction of an undesired substance into Pollution leads to harmful effects on living organisms.