Which of the following may lead to desertification?
Low precipitation
Salinisation
Acidification
All of the above
What is the presence of toxic chemicals in soil in high concentrations called?
Salinization
Soil pollution
Soil erosion
What is the informal geologic chronological term for the period that serves to mark the evidence and extent of human activities that have had a significant global impact on the Earth's ecosystems?
Cretaceous
Holocene
Anthropocene
Jurassic
What is process by which pH value of the soil decreases over time called?
Carbonization
How long does it take for natural processes to replace 25mm of topsoil?
10 years
25 years
100 years
500 years
What is the process of restocking of existing forests and woodlands that have been depleted called?
Afforestatiion
Reforestation
Carbon farming
Sustainable agriculture
What is the farming system in which the seeds are directly deposited into untilled soil called?
Overgrazing
No-till farming
Transformation of habitable land to desert is known as:
Urbanization
Desertification
Afforestation
Universal Soil Loss Equation predicts the amount of soil losses that may occur from:
Wind erosion
Rill erosion
Gully erosion
Tillage erosion
The universal Soil Loss Equation is:
A = RK
A = SCP
S = ARKLCP
A= RKLSCP