[Q]: In a healthy forest, dead trees and limbs fall to the ground and decompose. Which of these statements best describes why decomposition is important to a forest ecosystem?
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[A]: Nutrients are released when wood is broken down.

[Q]: Which factors can have the greatest effect on the health of a river system?
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[A]: nitrate levels and turbidity

[Q]: In order for a glider to fly, its weight must be opposed by
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[A]:
lift.