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Agriculture Science > Unit 8 Exam > Flashcards

Unit 8 Exam Flashcards

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1
Q

Potable

A

Drinkable

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2
Q

Desert

A

Are with continua, severe water shortages

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3
Q

Aquifer

A

Water bearing rock formation

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4
Q

Saturated

A

All spaces in soil filled with water

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5
Q

Water table

A

The level below which the ground is saturated with water

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6
Q

Evaporation

A

Liquid to gas

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7
Q

Erosion

A

Wearing away

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8
Q

Computer models

A

Used to identify pesticide movement

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9
Q

Pesticides

A

Allowed even though water may be available

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10
Q

Nitrates and pesticides

A

Monitored by the USDA

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11
Q

Nevada and Utah

A

No risk of groundwater contamination according to the USDA

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12
Q

Database

A

Used by the USDA to make management plans

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13
Q

Gravitational water

A

Water that trickles downward as a result of gravity

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14
Q

Capillary water

A

Usable by plants

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15
Q

Hygroscopic water

A

Soil water held so tightly by sediment grains that it is unavailable for plant use.

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16
Q

Water

A

Plants and animals 90%

17
Q

Constructed wetlands

A

Man made marshes

18
Q

Fresh water

A

Water that contains insignificant amount of salts, as in rivers and lakes

19
Q

Salt water

A

Water that contains dissolved salts and other minerals

20
Q

Brackish water

A

Mixture of fresh and salt water

21
Q

Plant residue

A

Plant material that remains when a plant dies or is harvested

22
Q

Hydroponics

A

A technique of growing plants (without soil) in water containing dissolved nutrient

23
Q

Irrigation

A

A way of supplying water to an area of land

24
Q

Mulch

A

A material (such as decaying leaves,bark, or compost) spread around or over a plant to add in soil erosion

25
Q

Artesian

A

A Well in which water rises because of pressure within the aquifer

Agriculture Science (1 decks)

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