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Answer Key
Grade 4 Science: Ecosystem Interactions Review+
1.
nonliving
2.
sun
3.
eating
4.
recycle/return
5.
energy
6.
chains
7.
prey
8.
resource
9.
living and nonliving parts interacting in an environment
10.
make food using sunlight
11.
eat other organisms for energy
12.
break down dead material and recycle nutrients
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