A child is diagnosed with retinoblastoma in which there are three tumors 4, 5, and 7 disk diameters behind the equator. Using the Reese-Ellsworth staging classification, which describes the staging and prognosis for this condition?

the correct answer is:

a population changes in response to a change in the environment.

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.

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.

condenser is used to focus in the light microscope.