Who many continent do we have in the whole world?

The ozone hole is at its biggest each year in the ? hemisphere in the ? season.

Sam hated the long nights of winter! his mother called him in from playing so early: around 4: 30 pm! it is usually dark out when sam is eating supper. what letter represents the long nights where sam lives? a) a. b) b. c) c. d) d.

After railroads, the next revolution of transportation came with the development of (a) automobile (b) telegraph (c) steam engine