Food Web: energy flow through an ecosystem

Energy Flows, Matter Cycles

Root - trophy: nutrition/foodAutotroph: organisms that obtain energy by photosynthesis or chemosynthesisHeterotroph: organisms that get energy by eating other organisms

Trophic Levels

Producers

Example: plants, some bacteria, algae

Autotrophs

HeterotrophsConsumer: eats (consumes) other organisms

Primary consumer - eats producersSecondary consumer - eats primaryTertiary consumer - eats secondary

Decomposer: gets their energy from dead organisms and recycles elements back into the ecosystem

Energy Pyramid

energy transferred through an ecosystem is not 100% efficienta lot of energy is lost as heatthis loss limits the number of trophic levels (high level consumers)

Chemicals Cycle

Chemicals and elements are cycled through the ecosystem: N, C, P, H2O