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28. Complete the sentences using the words from the previous Activity
and explain how food webs work.
1. Primary producers such as _____________________________ use sun-
light to produce ____________________.
2. Primary consumers such as ________________________
eat____________.
3. They are eaten by _________________ such as __________________.
4. A brown bear is __________________ because it _________________.
5. _________________________________________________________.
29. Arrange the organisms in Figure 3 into five different food chains.
(You should not have any organisms left over.)
Rearrange the five food chains into one large food web.
Figure 3 Food Web Participants
30. Read the text “HOW ECOSYSTEMS WORK” and find answers to
these questions in the text.
1. Where can chlorophyll be found?
2. Why do plants need glucose?
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