A water ____________________ refers to that level below which soil is saturated or filled with water.
Fill in the blank(s) with the appropriate word(s).
Question 2Areas of the country with continuous, severe water shortages are called ____________________.
Fill in the blank(s) with the appropriate word(s).
Question 3The addition of water to plants to supplement the water provided by rain or snow is called:
a. precipitation c. evaporation
b. irrigation d. saturation
Question 4Water that flows from land to oceans and contains little or no salt is considered:
a. tidal c. fresh
b. domestic d. universal
Question 5Which term means using techniques of soil preparation, planting, and cultivation that disturb the soil the least?
a. conservation tillage
b. contour farming
c. strip cropping
d. crop rotation
Question 6One major value of wetlands is that they:
a. remove impurities from the water
b. offer stagnant water for algae to grow
c. are the only habitat for waterfowl
d. protect the soil beneath the standing water
Question 7Constructed wetlands are:
a. found only in the Pacific Northwest of the United States
b. human-made marshlands
c. found only in the forests on the East Coast
d. found only next to rivers and lakes where there is a tendency to have water runoff
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