HURRY PLEASE HELP I REALLY NEED THE ANSWERS Briefly describe the three layers of the mantle. Include
temperatures.
•Lithosphere:
•Asthenosphere:
•Mesosphere:

lithosphere

Explanation:

is up of brittle crust and the top part of upper mantel and also the coolest and most rigid part of the earth

Lithosphere:

The lithosphere is the rigid outermost layer of the earth known as the mantle and the crust. And it is defined by its rigid mechanical properties.

Asthenosphere:

This layer is highly viscous and is very mechanically weak and is located below the Lithosphere it is also known as the ductile region of the upper mantle.

Mesosphere:

The mesosphere is the third layer of the atmosphere, directly above the stratosphere and directly below the thermosphere. In the mesosphere, temperature decreases as altitude increases.

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.