Describe the relationship between crust , mantle ,lithosphere , asthenosphere, and tectonic plates.

Crust is the the upper layer of the earth. There are two types of crust:

1)Ocean crust

2)Continental crust

Tectonic plate are generally made up of earth crust. The upper layer is mantle.The mantle is the mostly-solid bulk of Earth's interior. .

Crust and the upper layer combined to form lithosphere.They are about 80Km  deep.

The asthenosphere is ductile . They are deformed like silicon polymer in response to the warmth of the earth. The rocks actually flows, when stressed is appiled they are start moving deep interior of earth.

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.