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Crossword Science

Radon Gas

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Radon is a naturally occurring radioactive gas produced by the radioactive decay of the element radium. It usually enters a house or building through openings in the ground, and its presence increases the risk of lung cancer. The EPA recommends that all homes be tested for radon. Radon can not be seen, tasted or smelled. The following words can be found vertically, horizontally or even back wards.. Have FUN!!!

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Crossword clues

Solve these clues to fill the grid.

Vulnerability to the elements
6 Across
Extremely poisonous or injurious
8 Across
A heavy toxic silvery-white radioactive metallic element
11 Across
Impossible or nearly impossible to see
12 Across
Carcinoma of the ___
13 Across
A mechanical system in a building that provides fresh air
14 Across
A position on a scale of intensity or amount or quality
15 Across
The act of subjecting to experimental test in order to determine how well something works
1 Down
The 2nd letter of the Greek alphabet
2 Down
An independent federal agency established to coordinate programs aimed at reducing pollution
3 Down
Someone regarded as certain to succeed
4 Down
The 1st letter of the Greek ___
5 Down
Any process in which electrons are added to an atom or ion
7 Down
Exhibiting or caused by ___
9 Down
The act of observing something
10 Down
Posing no difficulty
16 Down

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