6. Explain how being able to create bricks might have affected the Early River Valley Civilizations.

To provide water, they dug irrigation ditches that carried river water to their fields and allowed them to produce a surplus of crops. For defense, they built city walls with mud bricks. ... These projects also created a need for laws to settle disputes over how land and water would be distributed.

Explanation:

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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.

"d.) carbon dioxide and hydrogen sulfide"