B. It's less dense. Ice floats<span> because it is about 9% less dense than liquid water.</span>
Abiotic means non-living. So the correct answer is "the lack of oxygen in coastal waters"
D with technology warnings are easier to give out to everyone allowing them to go to shelter
The right answer is E.
Uracil is a nitrogenous base (pyrimidine) specific for RNA. The nucleoide of uracil is called uridine and nucleotide is called uridine monophosphate or uridylate. In the DNA, there is thymine instead of uracil.
So if we mark the uracils, only the RNA will be marked. The DNA will not be given that there is no uracil in it.
