Ahiker is in grand canyon grand. which surface would provide the clearest echo?

the thick desert shrubs
the sandy riverbank
the rocky canyon walls
the surface of the river

Solve for r in the formula v = ir, when i = 5 and v = 15.

The process by which liquid water changes into water vapour is called what ?

In the von thunen model of agricultural land use, what is produced closest to the city epicenter? a. dairy, vegetables, and fruits b. field crops, such as corn and wheat c. beef and other animal products d. wood and lumber