Match each word to its correct meaning.

Radioactive decay means the process by which unstable nucleus of an atom spontaneously releases energy through the emissions of radiation used in dating fossils and rocks.

Relative dating mean the time required for half the atoms in an element to divide in half.

Explanation:

So radioactive decay belongs to A.

And relative dating belongs to B.

Please mark Brainlist if right

[content deleted] - user123802726recklesschicken

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.