Radon gas is a radioactive product of the decay of naturally occurring uranium<span> in the Earth's crust. Groundwater entering a house through a home water-supply system might release radon indoors where it could be breathed.</span><span>
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Answer:
Plants are valuable since they provide our food, materials for shelter, and purify the air (photosynthesis).
Animals such like livestock, supply us with food, fiber and leather.
The Endangered species act can help a local economy because it helps to supply clean air and pure water. It also protects our natural supplies.
Answer:
I think it's C, but if not, then A
Explanation:
A basketball rolls across the court by the force of a human pushing or the wind. It will stay in motion until acted on by another force like another player or a wall.