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Monday, March 18, 2013
Why we need to breath ?
Why
we need to breath
Answer :
1.
We need to breath be
cause if we d
o
n't we will die
2. We need to breath b
ecau
se
we
must to get rid the CO2
/ carbon dioxide (CO2 is toxi
c)
3. We need to breath because
we need O2 / Oxygen
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