Give two relevant examples of impact studies that could be conducted in our country ( south africa )

Following are two examples of impact studies that could be conducted in South Africa:

I) Effect of deforestation

II) Effect of increased vehicular pollution.

Explanation:

The country of South Africa once had a large forest cover which has now been cut down to only 7.6% of the total land area of the country. Also, after the end of apartheid, the country has seen a surge in the standard of living of the people resulting in the increased number of vehicles on roads.

This has certainly increased vehicular pollution in the country. The impacts of these two events can be studied in South Africa through various impact studies.

two jet streams that directly affect the formation of weather in the continental part are a polar jet and a subtropical jet. they are responsible for the transportation of weather systems, which directly affect people. the polar front is the boundary between cold air from the north pole and warmer equatorial air. both the polar jet and the subtropical jet blow from the west to the east, and follow the boundary between cold and warm air.

the strongest jet streams are polar jets, while subtropical jets are somewhat weaker.

the right answer is c. the polar jet stream is generaly stronger than the subtropical jet stream.