It is student A .
It contains the study of plants and soil
Answer:
A. oxygen
Explanation:
element in magma is most abundant is oxygen.
<span>C. they burn dead inorganic matter and return the nutrients to the soil.</span><span>
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<span>C the ratio of C-14 to C-12 decreases over time.
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<span>D the amount of C-14 is less than the amount of C-12.
They both are correct so, they both are your answer.
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