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Answer Key
Grade 5 Reading — Science
1.
the land area that drains into a common stream, river, or lake
2.
soaks into soil/aquifers and flows as surface runoff into streams (any two)
3.
they slow runoff, filter pollutants, and hold soil in place
4.
they absorb floodwater like sponges and release it slowly during dry months
5.
map drainage patterns, test water quality, plant native species, or join cleanups (any one)
6.
in the mouth
7.
the mixture of partly digested food that leaves the stomach
8.
the small intestine
9.
they increase surface area so blood can carry nutrients to the body
10.
eating fiber from fruits/vegetables/whole grains or drinking water (any one)
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