I think they are all biotic factors..hmm if not take out whichever sounds the most not fitting.
A benefit of using nuclear energy could be the abundance of uranium in nature. The human risk about mining that is the most important to consider are the health hazards that are associated with uranium mining.
Introns because they are coding sequences.
Exons because they are non-coding sequences.
It would be A; Or 0 because since the dominate trait is being able to roll the tongue, it over rules the recessive.
It might be stated that his reliability might be compromised because he writes the story many years later and his memories may be skewed. he is the narrator and the protagonist of the story and it is written in first person so he retells what he remembers from his life experience since he was a child.
