Which RNA nucleotide is complementary to thymine? adenine

uracil

guanine

cytosine

The series of transgressions and regressions that produce cyclothems were likely produced by

Pepsin is an enzyme in the stomach that breaks polypeptides into amino acids. pepsin functions best at a ph of around 1.5. what would be the most likely result if the ph of the stomach were increased to 5

The many volcanoes located along the edge of the pacific ocean make up the ring of fire. how does subduction play a role in the volcanic activity in the ring of fire?