The answer would be about 18.
<span>Christmas trees give, in fact, a lot of oxygen and in return they consume a lot of carbon dioxide.
</span><span>The oxygen produced by each tree depends on several factors, but there is a estimative. In about 1 acre of land, there are enough trees to produce the oxygen necessary for 18 people to breath during a whole year!
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Answer:
Yup it is made of neutrons itself composed of both neutrons and glial cells
We base hypothesis or theories off of data or observations.
Organisms need to take food because you need it to survive.
Autotroph --
<span>Autotroph is </span>an organism that can form nutritional organic substances.
Decomposers, fungi, and microbes play an important role because they break down the remains of dead plants and animals.
