All macromolecules are made mostly of the same six elements. what are
those six elements?

Carbon, hydrogen, oxygen, nitrogen, phosphorous, and sulfur.

Explanation:

Macromolecules such as carbohydrates or lipids are made of a selection of these six elements. Carbohydrates are made out of carbon, hydrogen, and oxygen--or "CHO" for short. Lipids are made out of carbon, hydrogen, and oxygen as well. Proteins are made out of carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur (CHONs, the s is lowercase because sulfur does not usually appear in proteins). Nucleic acids are made out of carbon, hydrogen, oxygen, nitrogen, and phosphorous (CHONP).

Hope this helps!

i'd say that the moon rock is about 2.2 billion years old.