The Baleen whale is the largest animal on earth yet it survives by consuming some of the smallest organisms in the ocean. What must be true in order for the Baleen whale to be sustainable? There must be enough Phytopankton to support enough Krill to sustain the whale.

The number of Krill is the only thing that matters in the environment because Krill are photosynthetic.

The number of Krill is the only thing that directly affects the whale because its the only thing the whale eats.

The whale can easily find other sources of food in the ocean to sustain itself.

The number of Krill is the only thing that directly affects the whale because its the only thing the whale eats.

the cell cycle is the final answer! : )

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.