The countries of the Tropical North exhibit great extremes of climate. Explain why some parts of the region are very cold and others are very hot.

When a dam is built in a hot, dry area, creating a lake or reservoir aboved the dam, how does the evaporation from that reservoir affect the environment ?

What would be the distance of all the planets to the sun in astronomical units?

Which is not part of the definition of a family? two or more related people living together being married or in a partnership a single person living alone choices a and b