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Crossword Science

Respiration

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Find the words associated with respiration (and maybe also breathing!)

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Crossword clues

Solve these clues to fill the grid.

An oxide containing two atoms of oxygen in the molecule
2 Across
The power to do work or make things move
4 Across
Living or active in the absence of free oxygen
8 Across
Gas in the air that we need to breathe
11 Across
Red liquid pumped around the body by the heart
12 Across
Either of two saclike respiratory organs in the chest of vertebrates (plural)
13 Across
A mechanical device in a camera that controls size of aperture of the lens
1 Down
Depending on free oxygen or air
3 Down
A monosaccharide sugar that has several forms
5 Down
Clear liquid we drink that falls as rain
6 Down
An abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous ___
7 Down
Support resembling the rib of an animal (plural)
9 Down
Tiniest unit of living things (plural)
10 Down

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