Biodegradation of oil in soil is difficult due to a lack of ________, which is very expensive to introduce into the sediments. 

A. phosphorous
B. carbon
C. nitrogen
D. oxygen


Answer: D

Biology & Microbiology

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In a monocot seed, what is the fate of the

coleoptile?

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_____ are densely staining, highly compacted, and transcriptionally inactive regions of chromatin

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