We use geologic cross sections to do what?

to see the patterns in a rock layer

to determine the absolute ages of rocks

the relative ages of rocks in an area & to decipher the area's geologic history.

to find fossils

Compounds which are found naturally in the earth are called: a. ores b. composites c. rocks d. minerals

Acharreadas is a popular mexican thing where people display varying skills of horsemanship much like what events in the united states?

What statement about charlemagne is not true? a. charlemagne's empire collapsed during his rule b. charlemagne sent missionaries throughout europe c. charlemagne encouraged the arts and education d. charlemagne ruled much of western europe a. charlemagne's empire collapsed during his rule