why should a geologist use great caution in reconstructing the geologic history of an area that has folds and faults?

What happens to rock when acid reacts with it?

Which statement explains what upwelling causes? a. upwelling causes tides to rise and fall. b. upwelling causes changes in the direction of currents. c. upwelling causes nutrients, minerals, and tiny organisms to rise. d. upwelling causes currents in the pacific ocean to change direction. i think the answer is c.

If scientists only detect p waves in a certain layer of earths interior what does that tell us?