THE EXAMS POINTA simple food-chain model
Food-chain arrows indicate energy transfer from the food to the consumer. Real ecosystems contain interconnected food webs.
Open mind map ↗Environment & Ecology
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Energy moves; nutrients cycle
Energy is dissipated as heat at each transfer. Nutrient elements can be reused through biogeochemical cycles. This simplified chain omits the many links in a food web.
Open mind map ↗Nitrogen: follow the transformations
These are connected pathways, not a single compulsory route for every nitrogen atom.
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