Match each air mass classification with its place of origin. polar
over land
continental
over higher latitudes
maritime
over lower latitudes
tropical
over water

Uranium is a mineral which is used to generate electricity. predict and explain the long term effect on the environment of obtaining and using uranium as a source of energy.

The climate in the temperate zone is cold in summers and warm in winters very cold year-round very warm year-round warm in summers and cold in winters

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