What is the estimate of the ability of soils to resist erosion called?
Gradient
Erodibility
Salinity
Soil buffering capacity
The act of farming using principles of ecology, the study of relationships between organisms and their environment is known as:
Sustainable agriculture
Carbon farming
No-till farming
Afforestation
Which of the following may lead to desertification?
Low precipitation
Salinisation
Acidification
All of the above
Which of the following dominates in land degradation?
Degradation by wind and water erosion
Physical degradation
Chemical degradation
Biological degradation
Transformation of habitable land to desert is known as:
Urbanization
Desertification
Reforestation
What is the minimum soil depth required for agricultural production?
10 mm
100 cm
150 mm
150 cm
What is process by which pH value of the soil decreases over time called?
Salinization
Soil pollution
Carbonization
Rain falling on which of the following area causes minimal soil erosion?
Frozen soil
Ploughed soil
Land with partial crop cover
What is the presence of toxic chemicals in soil in high concentrations called?
Soil erosion
How long does it take for natural processes to replace 25mm of topsoil?
10 years
25 years
100 years
500 years
