The most common tree in that continent is one that's named "floss silk". It's classified as a tropical tree so we could say that most of South America is covered in tropical trees.
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I think the answer MIGHT be D. RNA synthesis is carried out by proteins known as RNA polymerases that transcribe the genetic information from DNA in a highly-regulated, multi-stage process. But transcribe and translate are different so I'm not a 100% sure. Hope this helps!
They are ectotherms.
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