All of these terms except contribute to natural selection. a) cladograms b) coevolution c) mass extinctions d) adaptive radiation

Option A, cladograms

Explanation:

Cladogram is basically a tool that is used to represent the phylogenetic relationship between organisms. Here the organisms are represented in a diagram with a hypothetical relationship among them . It has no contribution in the change of morphology, analogy or genotype of any of the organsim represented in it. Hence, cladogram is just a method to study the relationship between organism.

While all three coevolution, adaptive radiation and even mass extinction bring changes in the species in some or the other form with time.

Hence, option A is correct

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.