What are the two main forces that cause surface changes on earth?
a. erosion and plate tectonics
b. chemical and physical weathering
c. plate tectonics and weathering
d. weathering and erosion

You could say the relative location of washington, d.c.

In the diagram below, ab and bc are tangent to o. what is the measure of

Rescooperate ice cream shop recently analyzed their books. they found that in the past year, they made 100000 selling ice cream and spent 75000 on supplies and factory space. the remaining 25000 represents