Science (086) — AI-generated practice question

Problem 1 — Biological Magnification (Energy/Matter flow in food chains):
Non-biodegradable substances like pesticides cannot be broken down, so they accumulate in organisms. As these pass from one trophic level to the next, their concentration increases — a process called biological magnification. Organisms at higher trophic levels (e.g., humans) accumulate the highest, most harmful concentrations.

Problem 2 — Long-term Solid Waste Accumulation:
Since non-biodegradable wastes (e.g., plastics) are not broken down by bacteria or other biological processes, they persist in the environment for a very long time. This leads to large-scale accumulation of solid waste, making disposal increasingly difficult and causing serious environmental problems.

Source: Chapter 13, Section 13.2.2 — Managing the Garbage we Produce

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• The question explicitly asks for two distinct problems: one linked to food chains (biological magnification is the expected answer) and one about solid waste management (persistence of non-biodegradable waste).
• Examiners look for the term biological magnification by name for full credit on the first point.
• For the second point, the key idea is that non-biodegradable substances persist in the environment because no enzyme/bacterium can break them down — directly from the passage.
• Don't mix up the two points; keep them clearly separated as the question demands "two distinct" problems.