20,059
edits
Changes
→Key Stage 4
: The first [[Trophic Level|trophic level]] in '''food chains''' are [[producer]]s which make their own food by [[photosynthesis]].
: The last [[Trophic Level|trophic level]] in a '''food chain''' is usually an [[Apex Predator|apex predator]] which may be a [[Tertiary Consumer|tertiary consumer]] or a [[Quaternary Consumer|quaternary consumer]].
: The arrows in a '''food chain''' always point from in the food to direction of [[energy]] transfer between the [[animalTrophic Level|trophic levels]] that eats it.
: The [[producer]] in a '''food chain''' is always eaten by a [[consumer]].
: With each [[consumer]] the total [[energy]] passed to the next [[Trophic Level|trophic level]] is smaller.