Explain why Point A is younger than the rest of the sandstone layer. (Hint: look at the key)

Point A is younger

Explanation:

Point A is on an extrusion. A extrusion that also forms on layers on top of the layer the question asks for, is definitely younger. It reaches all of the way to the 1st layer, yhe Breccia layer.

in a chemical reaction, the atoms and molecules produced by the reaction are called products. no new atoms are created, and no atoms are destroyed. in a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.