Cause and Effects of desertification

Desertification is: 

• a naturally occurring event due to continual droughts
• both natural and a man made activity caused by lack of precipitation and continual overuse of the land and its resources 
• is man made  but the impact on Earth is very limited
• is permanent and nothing can be done to prevent the causes or effects

Desertification impacts:

• less than 1% of Earth's land

• is limited to the area around Africa's Sahara and Kalahari deserts

• is greater than 75% of Earth's land

• approximately 33% of land on Earth

The process by which dry land is transformed into desert like conditions is called: 

• deforestation
• desertification
• evaporation 
• demarcation

The process by which land becomes increasingly dry to a point of being useless.

• desertification
• marginal land
• drought
• pastoral nomads

An unusually long period of time where little to no rain falls.

• marginal land
• drought
• desertification
• pastoral nomads

What is the name of the grassland that lies on the southern edge of the desert in North Africa?

• Sahel
• Serengeti
• Sahara
• Rift Valleys

What causes desertification?

• Over-cultivation of the land
• Not letting the land rest
• Overgrazing
• All of these options

What are some solutions to combat desertification?

• Encourage the use of firewood rather than coal.
• Increase the growth of cash crops that require a lot of water.
• Create walls of vegetation that break the wind storms from eroding the land.
• Grazing animals in the same fields year after year.

Which of the following can cause desertification?

• Using wood for fuel, rather than coal.
• Wildfires
• Building houses on dry land.
• All of the above.

Are deforestation and desertification related?

• Desertification and deforestation are the same thing.
• Deforestation contributes to desertification
• They are not related to one another.
• Desertification leads to deforestation.