What percent of all farms in the US are small family farms?

What border separates sonora and chihuahua national border state border physical boundary natural boundary

Most of the volcanic activity that occurs in the ring of fire is a result of the a. formation of mantle plumes away from plate boundaries. b. subduction of one plate under another. c. movement of two plates away from each other. d. sliding of one plate past another.

There is a lot of volcanic activity in southeast asia because much of the area lies on