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:
eye
Explanation:
Glaucoma is a disease of the major nerve of vision, called the optic nerve.
Worldwide, glaucoma is the second leading cause of irreversible blindness.
Answer: True
Explanation:
Mesocyclone of a supecell thunderstorm.
Answer:
No,we would need more information to determine whether or not something is living.
Explanation:
Matter is everything around you.