Where does the force of a tornado come from?

What would happen to kenya's pyramid if there was a rapid decline in its: a) birth rate b) death rate

Why are all maps distorted? when reading a map, why is it important to check the legend? what is the difference between longitude and latitude? identify the meridian at 0° longitude and the parallel at 0° latitude.

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