Nitrogen-fixing bacteria in soil can convert excess nitrogen into which can contaminate groundwater.
a/an forms around a well when the water table begins to slope toward the well.
the water in an artesian well comes from a/an aquifer.
a well not only has to reach the but also has to go deeper.
in most aquifers, the materials that make up the aquifer are relatively which means they aren't chemically reactive.
aquifers are more prone to pollution.
the two primary components of a septic system are a septic tank and a/an
groundwater that comes to the surface naturally is known as a/an
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According to the earth science reference tables, during which geologic time period were the continents of north america,south america, and africa closest together?
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Can someone answer all these questions i need it done by tonight. once again
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Why is the huronian supergroup rock formation particularly interesting to scientists? because it looks like a cross-section of a giant, stone encyclopedia because it formed during the period when oxygen began to accumulate in the atmosphere because it contains unusually large amounts of oxygen and sulfur because it dramatically altered the planet's development when it first formed
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Fossil fuels such as coal, oil, and natural gas were formed over millions of years by
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Nitrogen-fixing bacteria in soil can convert excess nitrogen into which can contaminate groundwater...
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