Forestry and Ag

Between 1988 and 1995, the North America cod (fish) population collapsed due of overharvesting. What might the government have done to help the population begin to grow in 1996?

• Set limits on cod fishing

• Allow unlimited fishing of cod

• Increased cod fishing in some areas

• Order people to stop eating cod

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 Instead of clear-cutting land and moving on, a local lumber business decides to start farming trees: cutting some of the trees and planting the fields they have just cut with saplings.

Compared to the old method of clear-cutting, evaluate the impact this new strategy will have on the environment.

• Negative, since it is destroying much of the environment.

• Positive, since the lumber company will immediately make more money.

• Positive, since it is a sustainable plan to use a renewable resource.

• Negative, since it is a sustainable plan to use a renewable resource.

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If sustainable and practical irrigation methods are not followed, what negative consequence can occur in and around the soils of agricultural land?

• Increased salinization of the soil can occur when salts in the irrigation water are left behind after evaporation.

• Increased organic matter can occur as the water can promote the breakdown of remaining plants parts in and around the agricultural field.

• Increased porosity of the soil can occur as water from irrigation systems further weather rocks within the soil.

• Decreased nitrogen in the soil can occur as fertilizers are not often injected in the irrigation water.

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What benefit does the prescribed burning of trees and understories of a forest promote?

• Removal of keystone species that decrease biodiversity.

• Decrease of soil nitrogen levels to prevent lake eutrophication.

• Increase of particulates within the atmosphere to reduce solar radiation intensity at the ground level.

• Removal of older and diseased trees that could catch fire due to lightning strikes and cause wildfires.

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Decades ago farming was not a controversial subject. Today, people have very definite opinions as to how their food should be produced. The three methods of farming are conventional, organic, and GMO farming. You have been assigned the task of creating a table to compare and contrast the three methods. Choose the descriptor that could be placed in the Organic column.

• Yield is typically higher in an organic field than for a similar crop grown in a conventional or GM cropping system.

• Reduced expenses in organic production that comes with the hand labor and simpler farming techniques.

• Elimination of synthetic pesticides and fertilizers and other materials, such as hormones and antibiotics.

• Produce is of higher nutritional quality than with a similar crop grown using conventional methods.

Which agricultural practice mixes different plant species on the same plot of land?

• terracing

• polyculture

• monoculture

• contour farming

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The greatest cause of malnutrition is _____________.

• bad cooking

• famine

• revolution

• poverty

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What minerals are present in salinized soil?

• bauzite

• salts

• gypsum

• feldspar

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In order to feed the growing population, scientist have found ways to increase the yield of a crop. What does the term yield mean?

• amount of land needed for a crop

• amount of chemicals used on crop

• amount of water used while irrigating

• amount of food produced in an area

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Most diets of the world consist mostly of ___________.

• grains

• meats

• fats

• vegetables

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