A drought is a period of below-average precipitation in a given region, resulting
in prolonged ... Causes of drought. Precipitation deficiency. See also:
Precipitation. File:Ancient Dry Spells Offer...
Drought has many causes. It can be caused by not receiving rain or snow over a
period of time. We learned in the discussions about the water cycle and weather
Drought ranks second in terms of national weather-related economic impacts,
with annual losses nearing $9 billion per year in the U.S.  Beyond direct ...
What causes drought? drought info Lack of rainfall (or precipitation) Droughts can
occur when there is the lack of 'expected' precipitation (rain and snow).
Droughts are caused by changes in land and sea surface temperatures,
atmospheric circulation patterns and soil moisture content. A change in any one
of these ...
A comprehensive overview of drought. The definition of drought, the causes of
drought, economic effects of drought, and how drought can be controlled.
The cause of droughts is easily understood, but hard to prevent. Depending on
the location, crop failures, famine, high food prices, and deaths can occur. One of
What causes droughts? A drought is a period of drier-than-normal conditions that
results in water-related problems.
Includes: physical causes of drought, the human connection, climate change and
drought, and guarding against dry times.
A secondary school revision resource for GCSE Geography on the causes and
impact of droughts.