Which animal probably lives closer to the Equator, the wallaby of northern Australia or the reindeer of central Europe?

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?

In russia which of these challenges affects the transportation of both petroleum products and other goods?

Largest layer of atmosphere international space station orbits ultraviolet radiation causes ionization the phrases describe what layer of earth's atmosphere?