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ENVIRONMENTAL HAZARDS

CONTENT

Meaning of Environmental Hazard
Definition of Soil Erosion
Causes of Soil Erosion
Types of Erosion
Effects of Soil Erosion
Control of Soil Erosion
Definition of Flooding
Causes of Floods
Effects or Consequences of Flooding
Prevention of Flooding
Meaning of Drainage
Types of Drainage Patterns

Meaning of Environmental Hazard

Environmental hazard is a term used for any situation or state of events which poses a threat to the surrounding environment and adversely affect plants and animals.

Soil Erosion

Definition of Soil Erosion

Soil erosion is the washing away of the soil by heavy rain or wind resulting in the formation of gullies and landslides and leaving behind silt on which plants can no longer grow.

Soil erosion can also be defined as the removal of topsoil faster than the soil-forming processes can replace it, due to natural, animal, and human activity (overgrazing, over-cultivation, forest clearing, mechanized farming, etc.). Soil erosion results in land infertility leading to desertification and devastating flooding.

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