The answer is D: process of hypothesis and testing through which scientists inquiry occurs
Creates one million jobs (500 000 direct and 500 000 indirect).
Accounts for about 18% of GDP (8.6% direct, 10% indirect and induced).
Is a critical earner of foreign exchange at more than 50%.Accounts for 20% of investment (12% direct).
Attracts significant foreign savings (R1.9-trillion or 43% of value of JSE).
Accounts for 13.2% of corporate tax receipts (R17-billion in 2010) and R6-billion in royalties.
Accounts for R441-billion in expenditures, R407-billion spent locally.
Accounts for R78-billion spent in wages and salaries.Accounts for 50% of volume of Transnet’s rail and ports.
Accounts for 94% of electricity generation via coal power plants.
Takes 15% of electricity demand.
About 37% of the country’s liquid fuels via coal.<span>
</span>With South Africa’s economy built on gold and diamond mining, the sector is an important foreign exchange earner, with gold accounting for more than one-third of exports. In 2009, the country’s diamond industry was the fourth largest in the world. South Africa is also a major producer of coal, manganese and chrome.
I believe it's 1,100 to 1,500 sunspots.