During the process of
photosynthesis plants use the energy from the light,
water from the ground, and carbon dioxide from the air to
produce sugar, starch and cellulose. The byproduct of this
process is oxygen. All the oxygen in the atmosphere is actually
made by plants on the ground and in the oceans.
At night however, plants absorb oxygen
and release carbon dioxide.
In many places it is a common belief
that you should not sleep under large trees at night, because the
shortage of oxygen and excess production of carbon dioxide may suffocate
you. We don't know how accurate such claims are, so we want to
investigate part of such claims.