D. because if they're not careful they become extinct by predators, then they have to be careful to survive by staying alert.
Please help.
autism
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.
Hope this helps :)
the for sure answer is D)tendon
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