The main reasons are low rainfall, variations in climate, land degradation, population growth and water pollution.
2. What is a drought? What type of hardships do you think that a drought could cause if you were living in a village in a poor country such as Ethiopia?
2. What is a drought? What type of hardships do you think that a drought could cause if you were living in a village in a poor country such as Ethiopia?
A drought is the opposite of a flood-it's when there is precipitation below average. If I was living in a poor country like Ethiopia, a drought would be terrible. Nobody would get enough water, and because Ethiopia is poor, they would not have very good dam systems and stuff, which would cause to lack of water for everybody. People could even die if a drought continues too long.
3. How does land degradation affect the supply of fresh water?
3. How does land degradation affect the supply of fresh water?
When land is degraded, the soil loses its ability to absorb water. So, when rain comes down(fresh water) the fresh water will run off a lot, because the soil cannot absorb, due to land degradation. The fresh water run-off would go to rivers and seas, and we would be losing our fresh water.
4.
a) What is El Nino?
El Nino is the Pacific Ocean getting warm every 3-5 years.
b) Why does El Nino often cause drought in Australia?
b) Why does El Nino often cause drought in Australia?
During El Nino, the wind going across the Pacific Ocean changes its direction. There is also reserved air pressure across the Pacific, which leads to high pressure systems over Australia. This pressure stops moist air from coming into Australia for a long time, which can cause droughts.
5. Observe the map showing the global effects of El Nino in 1982-83.
a) What effects does El Nino have on the availability of fresh water?
El Nino causes droughts, which cause rarely any rain. Rain is fresh water.
5. Observe the map showing the global effects of El Nino in 1982-83.
a) What effects does El Nino have on the availability of fresh water?
El Nino causes droughts, which cause rarely any rain. Rain is fresh water.
b) Name the countries and describe the problems that arose from decreased rainfall caused by El Nino.
Africa-decreased corn crop. China-Agricultural under serious problems from small amount of water and floods. Philippines-Decreased rice harvest. Indonesia-Forest fires and air pollution. Papua New Guinea-Failure of food crops. Australia-Wheat exports failure. Peru-Fishing problems.
1 comment:
Hyun Jin, this is very good work. The answers are answered correctly, and the words are your own. I appreciate the work this takes, yet you are also learning valuable skills.
Sweet.
mh
Post a Comment