Water
Water 2
Water Pollution
Origins of Ag
Ag Upgrades
100
Water that has few dissolved ions, such as salt
What is freshwater?
100
Any body of water found above ground, such as oceans, rivers, and lakes
What is surface water?
100
The water from precipitation that flows over the surface of the land
What is stormwater runoff?
100
The art and science of cultivating the soil, growing crops and raising livestock for humans.
What is agriculture?
100
The enrichment of an ecosystem with chemical nutrients, typically compounds containing nitrogen, phosphorus, or both.
What is eutrophication?
200
Used and contaminated water released after use by households, industry, or agriculture.
What is waste water?
200
California discovered saltwater was infiltrating some aquifers through a process called ________, thus putting that water supply in jeopardy.
What is intrusion?
200
The land area surrounding a body of water over which water such as rain could flow and potentially enter that body of water.
What is a watershed?
200
Before agriculture became widespread, people spent most of their lives doing what?
What is searching for food—hunting wild animals and gathering wild plants?
200
This invention made it possible to work the tough prairie soil with much less horsepower.
What is the steel plow?
300
Water that is one-foot of water covering a one-acre surface
What is acrefoot?
300
This was passed in 1972 to regulate pollution of freshwater in the US
What is the Clean Water Act?
300
A variety of sources contribute pollutants that can run off the surface of the land during rainfall and enter the water; air pollutants can fall directly with the rain.
What is non-point pollution?
300
The first domesticated plant was....
What is rice or corn?
300
The idea of breeding certain animals or plants based on their characteristics is known as this.
What is selective breeding?
400
The percent of the freshwater on the planet is trapped in ice caps and glaciers.
What is 80%?
400
This is the term for the height of the water level within an aquifer.
What is water table?
400
The boundary between land and a river or stream.
What is riparian area?
400
Agriculture and the surplus of food it produced provided the foundation for .......
What is the civilization/culture?
400
Materials such as manure, wood ash, ground bones, fish or fish parts, and bird and bat waste called guano are considered what?
What are natural/organic fertilizer?
500
The largest potential source of freshwater is found in ________ .
What are polar ice caps and glaciers?
500
Hypoxia is a condition where a body of water has low ____ ________
What is dissolved oxygen?
500
The Gulf of Mexico is one area where excess nutrients have impacted the ecosystem to the point of making a “_____ _______,” or hypoxic area, where most organisms are unable to survive due to lack of oxygen.
What is dead zone?
500
Around 5500 BCE, farmers in Mesopotamia developed simple...
What is irrigation systems
500
Explain how to map a watershed and why it is important/useful to understand watershed ecology.
Draw a line from hilltop to hilltop around a stream or body of water. Everything inside that line delineates the watershed, that is, the area of land where all rain and other sources of water drain into the water bodies. Water flowing or falling inside the line could potentially enter the body of water. Any pollution flowing in runoff inside the line could enter the body of water as well.
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