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PIMSO 2025 - Science - Secondary 2 - National Round Question 2

PIMSO Science · PIMSO 2025 - Science - Secondary 2 - National Round

Question 2

Which statement explains why populations in upper trophic levels tend to have less total mass than populations in lower trophic levels?
  1. Populations in upper trophic levels are more complex than populations in lower trophic levels.
  2. Populations in upper trophic levels have less available habitat than populations in lower trophic levels.
  3. Populations in upper trophic levels have less available energy than populations in lower trophic levels.
  4. Populations in upper trophic levels have more nutrient requirements than populations in lower trophic levels.