Space is filled with nothing.
Space is the absence of matter.
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I don’t know if I understand this myself, but I know that the dependent variable would be the Mitochondria thing, but I don’t know what the operational definition is. Anyway, I’m only in 7th grade, I’ll research this stuff.
Answer:
As carbon dioxide concentrations increase, so too does the rate of photosynthesis until a certain point where the graph levels off. At lower carbon dioxide concentrations carbon dioxide is the limiting factor because an increase in carbon dioxide causes an increase in photosynthesis.
Explanation:
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Its the Eccentricity of the earth. (shape of Earth's Orbit around the sun, whether it is more circular or ovular.)