We counted all of the circles in the tree stump to calculate how many years the tree was alive before it was cut down. Group of answer choices

cyclone

central

eccentric

concentric

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

What are the answers for the following questions?

The first atomic explosion was detonated in the desert north of alamogordo, new mexico, on july 16, 1945. what percentage of the strontium-90 ( yr) originally produced by that explosion still remains as of july 16, 2016?