geography management

What is desertification?

• the spread of desert conditions into what were previously moist areas

• the deliberate clearing of forested land

• the spread of desert conditions into what were previously semi-arid areas

What was the cause of desertification mentioned in the presentation? (select 3)

• Overgrazing

• Deforestation

• Climate Change

• Less amount of rainfall

What are magic stones?

• Circles of stones placed on the ground to hold water on the soil rather than letting it run off quickly over the surface

• Circles of stones placed on the ground to release water on the soil.

What is not a factor of a magic stone?

• It should be placed alongside contours

• Expensive to build

• Topsoil cannot be washed past the stones

• Water infiltrates the stones instead of running over the surface

What are the two factors of solar pumps?

• They convert sun rays to electricity that will operate the water pump

• Requires a lot of maintenance

• Extremely reliable

• They are pretty cheap