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Harcourt Science: Food Webs. Grade 4. All ecosystems contain many food chains. Each food chain contains both predators and prey. A predator is an animal that hunts another animal for food. The animal that is hunted is called the prey.
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Harcourt Science:Food Webs Grade 4
All ecosystems contain many food chains. Each food chain contains both predators and prey.
Click the following button to complete an activity which demonstrates how a food web works.