Food chains and food webs — Easy
Recall and familiar applications. Optional hints help you find a first step.
Includes extension practice
Food webs, trophic levels, inefficient transfer and crop/livestock energy comparisons are required. Pyramids of numbers, biomass and energy add material beyond the explicit list.
Easy, Normal and Difficult describe practice demand; they are not the official Core and Extended tiers.
- Cambridge 0654 syllabus2028–2029 · B18.2.1–15
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