For breaking down lactose
Synthesis of purine and pyrimidine bases in RNA and DNA
Diffusion is is like (spreading around), so it wouldn't smell that strong the further away you got... but you would still smell it
Since you are trying to investigate the possible variables that contribute to reef threats, it is advisable that you do an environmental study between two reefs that have characteristics that are similar or are closely similar. With this, you will be able to identify which is the primary cause of reef threats. Thus the correct answer is B.
