Which statement about earth's layers is true?
oa.
they all consist of liquid rock.
b.
they each vary in size and temperature.
c. they are all under an equal amount of pressure.
d. they will soon combine, forming a single, thick layer.

B

Explanation:

The do vary in size and temperature because as the layers go down to the core it gets harder and magma is more present

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides

idk lol use google m8