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food chains

how do you create a food chain?

Living organisms need energy to survive. A food chain sequences where this energy comes from and where it goes to. Natural food chains evolve over long periods of time, but if you introduce a new energy source to an existing population, you can create a new food chain. For example, if you introduced a plant in your garden that attracted aphids, you might quickly find ladybirds arriving to feed on the aphids and then birds who might feed on the ladybirds and so on.
28 June 2011
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