Soil Systems Topic 5

Question 1

Storages in soil

Answer 1

Organic matter
Organisms
Nutrients
Minerals
Air
Water

Question 2

Transfers within the soil

Answer 2

Biological mixing
Translocation
Leaching

Question 3

Inputs in soil system

Answer 3

Organic material including leaf litter
Inorganic material

Question 4

Outputs in soil system

Answer 4

Uptake by plants
Soil erosion

Question 5

Transformations within the soil system

Answer 5

Decomposition
Weathering
Nutrient cycling
Evaporation
Rusting soil
Humus formation
Nutrient cycling

Question 6

What are soils four components

Answer 6

Mineral particles mainly from underlying rock
Organic remains that have come from the plants and animals
Water within spaces between soil grains
Air also within the soil grains

Question 7

General properties of soil

Answer 7

Produced very slowly (almost nonrenewable)
Produced by weathering of parent rock
Erosion
Decomposition

Question 8

Factors that contribute to the decrease in agricultural land are:

Answer 8

Soil erosion
Salinization
Desertification
Urbanization

Question 9

Human activities that lead to soil degradation are:

Answer 9

Overgrazing
Deforestation
Unsustainable agriculture