The radius of the circle above is 26 mm. What is the circumference of the circle? (Use = 3.14.) A.
81.64 mm
B.
2,122.64 mm
C.
4,245.28 mm
D.
163.28 mm

Dubai is challenged by all of the following environmental factors except a. a warm and dry climate b. a lack of annual rainfall c. scarce freshwater resources d. a lack of valuable natural resources

If a volcano’s magma is high in silica, the volcano will probably a. erupt quietly. b. remain dormant. c. erupt explosively. d. produce dark-colored lava.

Both pictures below were taken at the same time of day, but one picture was taken in summer, and the other in winter. how can you tell which is in winter