Think Outside the "Bok"s
Water World
Soil, Straight Up
I'd Give that a D
Avoiding Ex-Streams
100
The term for the area in which agriculture first arose 10,000 years ago.
What is "The Fertile Crescent"
100
The term for the buildup of salts in the topsoil layer. More common and severe in arid areas
What is salinization
100
The three main nutrients necessary for plant growth
Phosphorous, nitrogen, potassium
100
Two of the four types of water erosion
What is rill, gully, sheet, splash
100
The term for rows of trees planted along the edges of fields intended to slow wind and prevent erosion.
What are shelterbelts
200
The term for agriculture powered by human/animal muscle power, hand tools, and simple machines.
What is traditional agriculture
200
The term for over irrigated soils
What is waterlogged
200
The three types of soil as determined by particle size. (from smallest to largest)
What is clay, silt, sand
200
The term for the "black blizzards" of soil in the 1930s in the United States
What is The Dust Bowl
200
The U.S. program in which farmers are paid to put highly erodible land in conservation reserves
What is the Conservation Reserve Program (1985)
300
Name three results of the Green Revolution
Increases crop yield, decreased starvation, new technology, crop varieties, farming practices introduced to developing countries
300
Two ways to prevent salinization
What is avoid planting water-guzzling plants in sensitive areas, irrigate with low-salt water, drip irrigation, use only the required amount of water
300
The term for soil with an even mixture of sand, silt, and clay
What is loam
300
The percent of the world's rangeland which is classified as degraded due to overgrazing.
What is 70%
300
The United Nations' main agricultural program
What is the Food and Agriculture Organization (FAO)
400
The general term for manure, crop residues, and fresh vegetation
What is organic fertilizer
400
The percent of wetlands that have been drained for farming purposes in the U.S.
What is 50%
400
Three ways to classify soil
What is color, texture, structure, pH
400
The percent of productivity lost for desertification to occur
What is 10% productivity
400
The term for level platforms cut into steep hillsides.
What is terracing
500
A form of agriculture typically used in tropical areas in which an area is left to regrow into a forest after cultivation
What is Swidden agriculture
500
The two reasons for the Swamp Land Acts of 1849, 1850, and 1860
What is the control of floods and malaria
500
In cation exchange, the type of ion roots donate to soil in exchange for nutrients
What is hydrogen ions
500
The amount (in tons) of soil lost per ton of grain harvested in the US
What is 5 tons
500
The main difference between the Soil Conservation Service and the Natural Resources Conservation Service, specifically.
What is the Natural Resources Conservation Service includes water quality protection and air pollution control
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