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What is the difference between a food chain and a food web? Also, could anyone provide an example of a food chain that has at least three steps and includes humans?
Question
#60576. Asked by Priscilla9. (Nov 16 05 7:58 PM)
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TheAlphaWolf
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A food chain only involves one link, and to give the example it's grass (producer/autotroph), cow (primary consumer/heterotroph) and then human (secondary consumer/heterotroph too).
A food web on the other hand is a diagram that has a bunch of connected food chains in an ecosystem. For example there may be a link from grass to cow, horse, caterpillar, and rabbit, because they all eat grass. Then each one of those has a link to other things they eat (other plants) and things that eat them (hawk, coyote, human, etc. for the rabbit; wasp, bird, beetle, etc. for the caterpillar, and so on).
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