food chains and food webs

I can't do this anymore

food web

shows how matter and energy flow through an ecosystem, from org. to org.

arrows in food webs…

indicate direction of energy flow ( point to org. taking in energy)

food webs

have at least 2 different interconnected food chains, show that orgs can exist at different trophic levels

trophic cascade

removal or addition of a top predator has a ripple effect down through lower trophic levels