Answer:
option C.there is an accumulation of carbon dioxide.
Explanation:
Groundwater varies between each year and state. Although from this map it seems as though the southeast part of the US contains more groundwater than other states. While the southwest and west side of the US does not contain as much groundwater as other states.
Answer:
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Explanation:
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The number that never changes is the atomic mass (atomic number on the periodic table)
