Read Pollutant concentration across trophic levels
This SOF ISO pattern tests arrange food chain. Read the condition carefully, then use the method below before you solve.
Living-system questions are solved by matching a structure or organism to its function, process and stated condition.
Follow energy one eater at a time
Arrow = energy moves to the eater
Start at the producer. When one population changes, first trace the organisms that directly depend on it for food.
Find the tested idea
Name the biological structure, process or relationship being tested before comparing the options.
Work from the evidence
Link the structure to its function, or trace the process in its natural order. Use the stated condition rather than a memorised exception.
Verify before choosing
Use the wording, diagram and units exactly as given. Select an option only after it satisfies every stated condition.
OlympIQ exam lens
- ✓Identify the biological level.
- ✓Match structure with function.
- ✓Check the condition in the stem.
Check that the option uses the correct level of organisation: part, organism, population or ecosystem.
Ready to try the pattern?
100% coverage across the linked question.
Practise the linked question