Food Chains. Food chains show which organisms eat other organisms Grass Rabbit Fox The arrows show the transfer of energy from one organism to the next. . Producers - organisms which can make their own energy from carbon dioxide and water using sunlight for energy (plants)
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Grass Rabbit Fox
Each level of a food chain is known as a trophic level
Fourth trophic level
Third trophic level
Second trophic level
First trophic level
1. Write down two food chains from this food web.
1. What will happen to the number of clown fish if the sharks become vegetarian?
2. What effect will this have on the number of zooplankton?
3. What will happen to the Blue Regal fish if a disease wipes out the small invertebrates.
These 25 sharks feed on 1,100 clown fish.
The clown fish feed on 15,000 algae.
Can you draw a pyramid of numbers to show this food chain? Use a scale of 1 mm for each 100 organisms to draw the pyramid to scale.