BI-1980
Food chains and food webs
Biology · Secondary 4 · Medium · Food chains and food webs
A non‑biodegradable chemical enters a pond and is absorbed by phytoplankton at a concentration of 0.5 units. Small fish eat the phytoplankton and reach an average concentration of 5 units. Large fish eat the small fish. Which value best predicts the concentration of the chemical in the large fish?
- 0.5 units
- 2 units
- 5 units
- 50 units
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