alaska is faumous for going day at a time without sunlight. predict when this would occur. why does it happen?

Alaska can have days with unusually long nights, this is due to its position on Earth. Earth has two poles, North and South; Alaska is very close to the North Pole. This affects the way the sun reaches Alaska. We know that since the Earth is tilted on an axis during the North's winter the pole is pointed away from the sun. Since Alaska is close to the pole it is also pointed away from the sun during the winter. This is why during the season Alaska has very short days.

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.