Answer:
Ninety nine percent of the atmosphere is composed of Nitrogen and Oxygen
Answer:
What impact do the available amounts of energy, water, and oxygen have on an ecosystem? They act as limiting factors. ... increasing the biodiversity of the ecosystem.
I think it might be sampling
H2o is the most common molecule in the human body. Remember the fact that 70% of the human body is made of water? H2o is the molecule for water, meaning that H2o is the most common molecule.
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