Theme 5 - Human activity and Ecosystem processes

Question 1

What are 5 reasons for the destruction of rainforests?

Answer 1

.commercial farming
.mining
.transport
.logging
.energy

Question 2

Desertification?

Answer 2

the spread of desert or desert conditions from an established desert area into the surrounding area.

Question 3

What are the three major kinds of habitat loss?

Answer 3

.habitat destruction - e.g. deforestation
.habitat fragmentation - e.g. urban development
.habitat degradation - e.g. pollution

Question 4

What are 5 ways in which tropical rainforests can be managed?

Answer 4

.agro-forestry
.selective logging
.forest reserves
.encouriging ecotoursim
.debt-for-nature swaps (poor country swap debt they have with rich country if they protect area of rainforest)

Question 5

What are 5 solutions to solve the problem of soil degradation and desertification?

Answer 5

.crop rotation (different nutrients used)
.plant shelter belts (protect land from water and wind erosion)
.reforestation (reduce wind and water erosion)
.irrigation (water dry areas by diverging rivers or digging wells
.placing limits on amount and type of animals that can graze on land