I believe its A because a bonds with t g bonds with c and c bonds with g, translated to rna it's UCG.
Answer:
<u>The woodpeckers wouldn't have homes/shelters to keep themselves safe so they would slowly die out.</u>
Answer 2:
I'm pretty sure you can also say, <u>they would have to adapt to living in a new species of tree</u>
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I hope this helped