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Acolorless, odorless gas that is radioactive and is formed naturally by certain rocks underground is called radon hydrogen carbon monoxide carbon dioxide
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Are substances released into the environment that in excess amounts cause damage
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Why are scientists concerned about the depletion of the ozone levels in the stratosphere?
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Use the phylogenetic tree to the right to determine which statement below is true. organisms a and f are not related. organism e is more closely related to organism b than organism f. organisms c and d are more closely related than organisms a and b. phylogenetic trees
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Acolorless, odorless gas that is radioactive and is formed naturally by certain rocks underground is...
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