BI-1986
Energy flow in ecosystems
Biology · Secondary 4 · Hard · Energy flow in ecosystems
A farmer sprays pesticide on crops. Over time, the highest concentration of pesticide is found in eagles that feed on many small birds which eat the crops. Which statement best explains this pattern?
- Energy is recycled between organisms and increases in eagles.
- Pesticide is broken down into harmless substances in plants.
- Pesticide concentration increases at higher trophic levels as predators eat many contaminated prey.
- Eagles excrete less pesticide than small birds so less remains in their bodies.
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