BI-1864
Energy flow in ecosystems
Biology · Secondary 4 · Hard · Energy flow in ecosystems
In a food chain, grass → grasshoppers → frogs → snakes, a pesticide is sprayed on the grass. The concentration of pesticide in the grass is 0.02 ppm. Which organism will have the highest concentration of pesticide and why?
- Grass, because it is directly sprayed with pesticide
- Grasshoppers, because they are the first consumers
- Frogs, because they eat both grass and grasshoppers
- Snakes, because they are top predators and eat many frogs
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