If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content
AP.BIO:
ENE‑1 (EU)
,
ENE‑1.O (LO)
,
ENE‑1.O.1 (EK)
,
ENE‑1.O.2 (EK)
How food chains and food webs represent the flow of energy and matter. Trophic levels and efficiency of energy transfer.
Sort by:
Biology is brought to you with support from the Amgen Foundation