The vertical sequence of the layers of soil is called a soil
a. family.
b. horizon.
c. profile.
d. dynasty.

How is frances culture important to its economy

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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?