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10 April, 17:19

Unlike food webs, food chains

a. involve a single chain of energy transfer from one organism to another through consumption

b. contain autotrophs that make their own food

c. involve a network of complex interactions among various organisms in an ecosystem.

d. contain consumers that eat producers.

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  1. 10 April, 17:21
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    The correct answer is A.

    a food chain might look like this: plant - > bird - > mammal

    while a food web would look more like a spider web, and get it's energy from multiple sources. The network explained in choice C is a food web. Answer choice B and D are also false because both food webs and food chains contain autotrophs ... 90% of our energy is from the sun, and the only way to get that energy is through the consumption of autotrophs.
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