Food chains and food webs — Difficult
Transfer your understanding to a changed context, justify decisions and check your reasoning. No hints during the test.
Includes extension practice
Food chains/webs and feeding categories are required. The shared set adds pyramids of numbers, biomass and energy and detailed trophic-efficiency comparisons.
Easy, Normal and Difficult describe practice demand; they are not the official Core and Extended tiers.
- Cambridge 0653 syllabus2028–2029 · B15.2.1–10
Loading your saved test…