Question

what term do environmental scientists use to describe the increased concentration of toxic chemicals in each succeeding trophic level as we move up the food chain? biomagnification biodegrading resurgence resistance

Explanation:

To solve this, we analyze each option:

• Biomagnification: Defined as the increase in concentration of toxic substances in organisms as we move up the trophic levels in a food chain. This matches the description in the question.
• Biodegrading: Refers to the breakdown of substances by biological agents (like bacteria), not related to concentration increase in trophic levels.
• Resurgence: Means a revival or reappearance, not related to toxic chemical concentration in food chains.
• Resistance: Often refers to an organism's ability to withstand a substance (like pesticides), not about concentration increase in trophic levels.

Answer:

A. biomagnification