Some forested areas of the country have large, flat-topped boulders left behind by glaciers. The tops of the boulders have become covered with lichens, grasses, shrubs,
and even some small trees. Deer can jump onto the top of shorter boulders to graze; however, none
of the deer can jump onto the tallest boulders. Scientists sampled vegetation from the tops
of these boulders, some of which were grazed by deer and some of which were not.
Scientists observed that the most diverse plant growth occurred on the boulders that could
not be reached by deer.
Identify the control group for the investigation.
Identify the hypothesis for the investigation

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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.

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hope this