In South Africa, the mining industry is very important to the economy. Investments in new technologies and heavy machinery are needed to extract natural resources such as gold and diamonds from the earth. Based on the text, it is important for businesses in South Africa's mining industry to invest in which of the following?

a. venture capital

b. capital goods

c. capital markets

d. human capital

B

Explanation:

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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.