An ecosystem is shown in the illustration. Assume that human activities have led to a decrease in the number of eagles. A virus attack on rabbits has led to a decrease in their population in the ecosystem. Which two sentences describe likely effects on the ecosystem? There’s an increase in the number of snakes and insects and a decrease in the number of frogs.
There’s an increase in the number of snakes and insects, and the storks face increased competition for food.
There’s an increase in the number of storks and a decrease in the number of snakes and insects.
There’s an increase in the number of frogs and a decrease in the number of storks and insects.
There’s a decrease in the number of snakes, insects, and frogs.
Reset Next

the backbone of the dna and rna compound is sugar phosphate.

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.