I think its C. global warming
because the other one directly threats aquatic bio diversity while global warming doesn't just affect aquatic biodiversity
Tracers are defined as elements
that can be monitored through biochemical reactions. This characteristic of tracers makes
them useful for the exploration of the mechanism of chemical reactions by
tracing the path that the they follow from reactants to products. A good
number of complex biochemical reactions (e.g. photosynthesis) have been studied
using tracers.
It depends on how you look at evolution. I would say B would be my answer. but it also depends on the course you take. Mine was a Christian based course. So I learned that evolution wasn't a thing.
The DNA synthesis process is continuous on one strand while discontinuous on the other because of the fact that the DNA polymerase can add new nucleotides to the newly replicated strand only at the 3'end. The two strands of the DNA are anti-parallel, and so during the process of replication the DNA polymerase only works by adding new nucleotide from the 3' end. This leads to the synthesis of a continuous strand on one template stand, and the formation of the okazaki fragments on the another.
Hence, the correct answer is 'Option B and Option D'.
