What causes the earth’s tectonic plates to move

What is the radius of a circle whose equation is (x + 5)^2 + (y – 3)^2 = 42? 1. 2 units 2. 4 units 3 .8 units 4. 16 units

What mountain peak is farthest from the center of the earth

Agriculture is a. slowly being replaced by mining as the primary industry in southern africa c. not possible in southern africa because of drought b. the primary industry in southern africa d. none of the above