Relations
Food chain = simple model of feeding relations
Org'isms connected by it, repr. as food chains
Producers at beginning - green plants for land, algae for sea
(tiny PS org'isms phytoplankton also in sea)
Primary Consumers - eat producers, herbivores (land sheep,
hippos, rabbits etc; sea zooplankton, shrimps, crabs etc.)
Secondary Cnsumers - eat primary, carnivores (land lions, foxes, eagles chameleon; sea larger fish, turtles, seals)
Tertiary Consumers - eat secondary, large carnivores
(polar bears, tigers, prey birds); most org'ism eat food variety