The appalachians, the oldest north american mountains, are an example of upwarped mountains.

select the best answer from the choices provided

t
f

What evidence does the writer give to support his argument about coral reefs? a) he speaks of the activities of coral polyps. b) he describes the composition of the great barrier reef. c) he emphasizes the ways in which coral reefs are fragile. d) he points out the ways that scientists do research on the reefs.

Given: circle a externally tangent to circle b. how many possible common tangents to circles a and b can exist? 2 3 4

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