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Ch. 14 Water Resources

Across
Water found on Earth’s surface
An area where water soaks into the ground and reaches an aquifer
Rock, soil, or gravel that holds water
A hole dug into an aquifer to reach groundwater
Water that has been used by humans
All the land area that drains into a river system
Pollution from many sources spread over a large area
Pollution from discrete locations
An obstruction placed in a river or stream to block its flow
Soil and rock layer with few or no spaces for water
Down
Eutrophication caused by human nutrient pollution
Moving water from its source to where humans use it
Lakes that store water for human use
Water that is mostly pure, with few dissolved salts
Sudden explosion of algal growth
A network of connected rivers and streams
The buildup of salts in the surface layer of soil
Removing salt from seawater
Water that flows over land and has not been absorbed into the ground
Fresh water found below Earth’s surface
Algal bloom of a marine algal species that produces reddish pigments
Soil and rock layers with spaces for water to pass through
Disease-causing agent