Hot. Cold. Wet. Dry.

Or a mix of these, for example, Hot-Wet, Cold-Dry, Hot-Dry ... The prevailing weather conditions make up the climate of the place we stay.

Changes have taken place and the world was cooler many thousands years of ago. Ice Age was the time more ice covered the earth's surface.

In hot and wet place, plants grow fast as rainfall is greatest in the torrid regions. In hot and dry places, where no rain falls, we find the world desserts.

Men found that it is generally cooler in the hills and mountains than in the valleys and by the sea. This is because hills and mountains act as storage houses for moisture. Hills and mountains are green and they are environmental friendly objects.