When correlating rock between widely separated areas or between continents, what feature do geologists rely on the most? ?

Plants in the tundra biomes have had to adapt to live long periods of time without a. cool temperatures b. sunlight c. oxygen d. water

Which is not an example of a  cultural  bond found in a nation-state? a. a holiday traditionb. a common religionc. a favorite placed. a shared history

How does the bare soil surface type affect the amount of runoff