If you start with acetyl-coa labeled with 14c in the methyl-carbon, where does the label end up in malonyl-coa?

i think the answer would d

affects the water bodies: excessive use of fertilizers causes eutrophication. the fertilizers which are used on plants affect the quality of land on which it is used, further causing erosion of soil. the fertilizers used on plants contain harmful chemical fumes which affect the environment.