Scientists assume that an organism’s ancestors required a climate similar to the climate required by the present-day organism. t or f

True

Explanation:

The scientist assume that the climate required by the ancestors of the organism had the same climate as it is required by the organism on the present time.

The climate required by the same type of organism will be same, this was concluded by observing the fossils that was found during the present time.

The fossil record showed that the conditions and climate is matched is same for the organism.

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.