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Food webs - Ecology

this shows food chains, food webs, and energy pyramids
by

shelly pilversack

on 6 September 2011

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Transcript of Food webs - Ecology

Energy Flow in the Ecosystem
Food Webs
Food Chains
Energy Pyramids
Food chains show the path of energy from one organism to another.
Each step in the food web is called a TROPHIC LEVEL.
The sun is the ultimate source of energy for all food chains, webs, & pyramids.
Food chains are simple.
Webs show a more realistic path of energy
flow in the ecosystem.
Energy pyramids show the trophic levels stacked like a pyramid.
Only 10% of energy is passed from one level to the next.
Sun: ultimate source of energy for all life
Grass-Producer
Grasshopper:
Herbivore -
First level consumer
Bird:
Omnivore -
Second level consumer
Cat:
Carnivore -
Third level consumer
Fungi: Decomposer
The arrows point to what eats!
Full transcript