The two energy sources that cause the most air pollution in the Middle East are "?" A. coal and gas
B. nuclear power and oil
C. coal and nuclear power
D. gas and oil

Distance that lewis and clark traveled from st. louis to ft. clatsop near the pacific ocean.

What structure on the south african coast has a range of 63 km and releases flashes every 30 seconds?

If the distance between two points on the ground is 10 miles and the distance between the same two points on a map is 4 inches, what is the map scale expressed as a ratio?