1 organism per trophic level
In food chains no omnivores or more than 2 trophic levels
Show flow of matter and energy
Food Webs
Better description of ecosystem (community of organisms which are interacting -> feeding)
Organisms feeding at different trophic levels
1) Multiple predators
2) Multiple prey
3) Food chains becoming linked
Producer -> Grass
Primary consumer -> Rabbit, beetle, slug, mice, woodlice
Secondary -> Small birds, badger
Hawk can be secondary consumer or tertiary consumer
Food chains are linked (2 or 3 links)
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