A) Soil erosion B) Animal overgrazing C) Monoculture planting D) Road construction
A) Volcanic ash deposition B) Thermal degradation C) Water erosion D) Seismic activity
A) By promoting plant growth B) By increasing soil aeration C) By reducing soil temperature D) By increasing impermeable surfaces
A) Drip irrigation B) Organic composting C) Crop rotation D) Overgrazing of animals
A) About 38% B) About 50% C) About 75% D) About 10%
A) More than 2 billion people B) More than 6 billion people C) About 1 billion people D) About 4 billion people
A) Reduced by 50% B) Reduced by 10% C) Reduced by 5% D) Reduced by over 75%
A) 80–100% B) 10–50% C) 50–80% D) 1–5%
A) Between 5% and 20% B) Exactly 25% C) More than 50% D) Less than 10%
A) North America B) Developing countries C) Developed countries D) Western Europe
A) 50.0% B) 8.2% C) 2.1% D) 40.5%
A) Tsunamis and wildfires B) Mud flows and floods C) Earthquakes and volcanic eruptions D) Tornadoes and hurricanes
A) Desalination B) Soil alkalization C) Glacial melting D) Eutrophication
A) Only natural organic matter B) Agricultural inputs and industrial, urban, and road pollutants C) Fish nutrients D) Pure mineral deposits
A) US$700 million B) US$915 million C) US$44 billion D) US$400 billion
A) About US$400 billion B) About US$1 trillion C) About US$44 billion D) About US$10 billion
A) 1974 B) 2004 C) 1994 D) 1984
A) Eastern Australia B) Densely populated South Asia C) Central America D) Northern Europe
A) Crop rotation B) Monoculture planting C) Permaculture gardening D) Agroforestry
A) Urban planning B) Sustainable forestry C) Improper agriculture practices D) Hydroponic farming
A) Mulching B) Cover cropping C) Tilling or plowing D) No-till farming
A) Increased crop yield B) Soil erosion acceleration C) Enhanced biodiversity D) Soil nutrient enrichment
A) It improves food security B) It reduces food security C) It eliminates food shortages D) It has no impact on food security
A) Floods can degrade soil, and soil degradation can cause floods B) Soil prevents floods, and floods create soil C) Floods improve soil, and soil repairs floods D) There is no relationship between floods and soil
A) Dissolved calcium and magnesium B) Pesticides and fertilizers C) Plankton and algae D) Freshwater and oxygen
A) Because they are completely natural B) Because they have no ecological effect C) Because they disappear instantly D) Because of the multiplicity of the products and their broad spectrum of action
A) Multiplication B) Perturbation C) Enhancement D) Stabilization
A) Flourishing B) Disappearance C) Mutation D) Duplication
A) Animal migration and population boom B) Increased species adaptation C) Expansion of ecosystems D) Biodiversity loss and animal extinction
A) Pedolysis B) Retrogression C) Humification D) Climax
A) Succession B) Retrogression C) Climax D) Pedolysis
A) Pioneer species B) Original rock C) Bare rock outcrops D) Vegetation
A) Herbaceous vegetation B) Pioneer species C) Secondary communities D) Lichens and mosses
A) Pioneer species B) Mineral horizons C) Climax vegetation D) Secondary communities
A) Human activity B) Climax vegetation C) Pioneer species D) Natural physical states
A) 25% B) 33% C) 23% D) 50%
A) 50% B) 23% C) 33% D) 25%
A) 23% B) 50% C) 33% D) 25%
A) Pioneer species B) Shrubs C) Secondary communities D) Climax vegetation
A) Herbaceous vegetation B) B horizons C) Bare rock outcrops D) Peat bogs
A) Bare rock B) Forest C) Lichens D) Mosses
A) The B horizon B) The C horizon C) The bedrock D) The A horizon
A) Climax vegetation horizons B) Mineral horizons (B horizons) C) Primary plant communities D) Pioneer horizons
A) Climax B) Pedolysis C) Retrogression D) Pioneer stage
A) "Bare rock outcrop" B) "Secondary community" C) "Natural potential" D) "Humus horizon"
A) The evolution towards climax B) The erosion of the A horizon C) The removal of mineral nutrients D) The process of soil degradation
A) Always exactly one hundred years B) Very variable C) Strictly uniform across all biomes D) Consistently over a million years
A) The International Food Policy Research Institute soil map B) The Pygmy forest sequence in Mendocino County, California C) The peat bogs of Washington D) The University of Bonn pastureland
A) Through intensive human activity B) Via rapid soil erosion C) Through the creation of peat bogs D) Naturally
A) Older soils B) Soils dominated by pioneer species C) Younger soils with only an A horizon D) Soils in the earliest stages of succession
A) Pedolysis B) Biome C) Peat bog D) Climax
A) Plate tectonics B) Biorhexistasy C) Natural selection D) Continental drift
A) Chemically B) Thermally C) Radioactively D) Mechanically
A) Homeostasis B) Rhexistasy C) Biostasy D) Catastrophism
A) Rich organic humus B) Coarse detrital materials C) Fine clay particles D) Dense vegetation mats
A) Biostasy B) Metamorphosis C) Synthesis D) Rhexistasy
A) Horizontal displacement B) Ascending circulation C) Stagnant pooling D) Descending leaching
A) No, it is always partial B) Neither, it is always stable C) Yes D) No, it is always total
A) Nothing B) Leafy tree roots C) The upper horizons D) Humus layers
A) Establishing biostasy B) Building root barriers C) Clearing D) Planting grasses
A) Pioneer condition avoidance B) Abusive cuts C) Natural avalanche prevention D) Water barrier maintenance
A) Humus addition B) Ascending circulation support C) Litters raking D) Wind barrier construction
A) Government regulations B) Long-term goals C) High financial costs D) Short-term benefits
A) Central Vietnam B) Northern Thailand C) Southern Cambodia D) Northeast India
A) Sand and gravel mixtures B) Crushed limestone and volcanic ash C) Synthetic chemical fertilizers D) Organic matter from termite mounds
A) Chlorite B) Bentonite C) Illite D) Kaolinite
A) Quartz B) Kaolin C) Mica D) Smectite
A) Bangkok Agricultural Institute B) Khon Kaen University C) Chiang Mai University D) Thailand Science Research Council
A) 50 kg B) 500 kg C) 100 kg D) 200 kg
A) 100% B) 73% C) 18% D) 50%
A) 1998 B) 2005 C) 2008 D) 2010
A) Three years B) Five years C) One year D) Ten years
A) 1,000 farmers B) 100 farmers C) 250 farmers D) 500 farmers
A) 73% higher B) 5% higher C) 35% higher D) 18% higher
A) Vegetables B) Corn C) Rubber trees D) Rice
A) 200 farmers B) 400 farmers C) 20,000 farmers D) 250 farmers
A) A further 200 farmers B) A further 400 farmers C) A further 250,000 farmers D) A further 20,000 farmers |