EESA01H3 Study Guide - Final Guide: Cation-Exchange Capacity, Soil Retrogression And Degradation, Isotope Fractionation

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Published on 11 Apr 2017
Lectures 7-11 Questions EESA01 Final Exam Preparation
Choose the best answer
1. Soil formation is dependent on
A. Tropical climate, acid precipitation, frequent wildfires
B. Weathering of parent material, freezing/thawing, growth of roots
C. Nitrogen-fixing bacteria, herbivory grazing
D. Erosion, level terrain, absence of rooted vegetation
E. Seasonal changes in tides
2. Soil consists of
A. Mineral matter
B. Living microrganisms and decomposers
C. Organic matter, air, water
D. Mineral matter, organic matter, air, water
E. Decomposers, mineral matter, organic matter, air, water
3. Humus is
A. Deposition of organic matter
B. A dark spongy mass of material formed by decomposition
C. Formed by oxidation of minerals, warm and wet conditions, reactions of water with
parent material
D. A type of food produced by wet soils
E. A type of chemical weathering of soils
4. Soils are classified with various categories based on
A. Hue, saturation, brightness, colour
B. Colour, texture, structure, pH
C. Loam, humus, depth, vegetation type
D. Physically weathered soil, chemically weathered soil, biologically weathered soil
E. The type of dead and living microorganisms present, parent material, organic material
and decaying material
5. With sandy soil, one can expect
A. Little vegetation, widespread erosion
B. Little plant roots, diminished cation exchange capacity
C. Many plant roots, great cation exchange capacity
D. Lots of vegetation, minimal erosion
6. Most of the worlds soil degradation is a result of
A. Deforestation
B. Cropland agriculture
C. Industrialization
D. Overgrazing
E. Global Climate Change and subsequent weather patterns
7. The greatest factor affecting soil agricultural productivity is
A. Shallowness
B. Dryness
C. Wetness
D. Contamination
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E. Permafrost
8. Which type of erosion causes the most displacement of topsoil
A. Wind (aeolian)
B. Splash
C. Sheet
D. Rill
E. Gully
9. Over the past 50 years, soil degradation has reduced global grain production by
A. 50%
B. 13%
C. 25%
D. 6%
E. 75%
10. Contour farming includes
A. Shelterbelts and intercropping
B. Plowing furrows sideways perpendicular to its slope to prevent rills and gullies
C. Level platforms cut into steep hillsides, forming a staircase to decrease water erosion
D. Furrows cut in the soil, which is done to reduce impact of plotting, as a seed is merely
dropped in and the furrow is closed
E. Rows of tall perennial plants planted along the edges of fields to decrease wind erosion
11. The TED talk- Other Inconvenient Truthexplains that we must double agricultural
production by the year ___ by _____
A. 2050, freezing the footprint and increase farming efficiency
B. 2050, terra culture
C. 2100, freezing the footprint and increase farming efficiency
D. 2100, terra culture
E. 2075, extensification
12. The most common GM crop type is/are
A. Soybeans
B. Corn
C. Cotton
D. Canola
E. Rice
13. The nation with the highest percentage of GM crops is
A. Brazil
B. India
C. China
E. Argentina
14. The smallest relative amount of feed input needed to achieve 1 kg of edible weight is
achieved with
A. Beef
B. Chicken
C. Pork
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