Written by: Stephen Pegler
Wednesday, January 17, 2007

1.  Camouflage benefits insects by helping them to:

2.  Ponds and rivers are two types of:

3.  One reason to protect Earth’s biodiversity is to preserve undiscovered:

4.  As water moves slowly through a wetland, some waste materials settle out, some wastes are absorbed by plants, and silt and mud is trapped by plant roots. In this way, wetlands act as natural:

5.  The dense cover created by the tops of trees in the rainforest is called the:

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