During which period did eurypterids swim the oceans and the first jawed fish and vascular plants evolve?

The correct answer of the given question above is the first option. The period in which Euripides swim the oceans and the first jawed fish and vascular plants evolve is in the Silurian Period. This is the period that occurred from 443 million to 416 million years ago and was the third period of the Paleozoic Era. Hope this answer helps.

hey, i believe your answer would be d. sugar ribose and the base uracil. i believe this is the answer, because rna consists of sugar ribose, adenine, guanine, cytosine, and uracil.

your first option is incorrect, because that's dna. where it consists of sugar deoxyribose, adenine, guanine, cytosine and thymine.

your second option is also incorrect, this is because sugar deoxyribose is in dna, and uracil is in rna. these two do not make sense together.

your third option being incorrect, because sugar ribose is in rna, but not the base of thymine. rna consists of uracil, not thymine.

lastly your fourth option being correct! this answer is correct, because both sugar ribose, and the base uracil are in rna! ~

answer is d. sugar ribose and the base uracil.