In the earth’s layers, why is the outer core in the state of a liquid and the inner core in the state of a solid?

a. the temperature of the core will not allow either part to be solid.

b. the outer core is hotter that an inner core which makes the material liquid.

c. the composition of the outer layer is made up of material that has a lower melting point

d. the pressure applied to the inner core causes it to be solid even though it is hotter than the outer core.

(( this is science))

d

Explanation:

the high pressure causes the inner core to be solid  but the outer core doesn't have much pressure applied to it

hydroxyl -oh

alcohols, always polar, can form hydrogen bonds with h2o molecules

carboxyl -cooh  

cargoxylic acids, has acidic properties which is a source of hydrogen ions, found in cells in ionized for with a charge of oh-1

carbonyl > co

ketone if within skeleton, aldehyde if group is at the end of skeleton, k & a may be structural isomers, it determines 2 sugars (ketose & aldose)

amino -nh2

amines, acts as a base, it can pick up h+ ions from surrounding solution, ionized with charge of 1+

methyl ch2

addition to rna/dna affects and gene expression

phosphate -opo3 ²⁻

organic phosphates, contributes to negative charge to, molecule that it is a part of, and potential to react with h20

sulfhydryl -sh

thiols, cross-linking stabilize the protein, and it is structure

well the answer is 2!