Which isotope is appropriate for dating that are billions of years old

Hurry locate the iberian peninsula question options: 1 2 3 4 which number shows the location of italy? question options: 1 6 5 3

Why have the aztec ruins in mexico city not been dug up?

In article v of the united states constitution, the amendment process is explained. why did the framers include provisions for amending the constitution? a) to limit the individual liberties of american citizens b) to allow the constitution to adapt to future circumstances c) to allow the president to change the constitution as needed eliminate d) to ensure that state governments had more power than the nation