Answer:
C. a single strand and contains uracil.
Explanation:
DNA has 4 bases: adenine, cytosine, guanine, and thymine and is double stranded while RNA is one stranded and instead of thymine, it uses uracil.
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The ocean is rich.
The peppered moth is a temperate species of night-flying moth. Peppered moth evolution is an example of population genetics and natural selection and not artificial selection.
I don't get your question
300