Recall that photosynthesis consists of two sets of chemical reactions. Which of these describes the energy conversions that
occur during the light-independent reactions?
Olight energy → chemical energy
O chemical energy → chemical energy
O chemical energy → mechanical energy
O mechanical energy → mechanical energy

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.

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answer: collecting information/data

reason: the student is going around and asking people questions to collect data

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