Best Answer: The initial size of the star is what decides. A star is huge, I mean really big, and all that gravity wants to pull itself together (everything attracts). So, the star wants to collapse. But, it creates nuclear fusion, and that is the force that pushes the star out.
2015-11-20T10:18:22-05:00. agricultural. The largest use of the world's water is used for irrigation or agriculture. This is because the high demand of food thus agricultural products are demanded to supply at a rapid amount in just a short time. The population growth influences mainly the use of resources and one is water. Fresh water only amounts little to the drastic needs of society today and much is used for agriculture as studies suggest.
For example, over 15 percent of its GDP comes from agriculture, which uses 60 percent of South Africaâs water supply [1]. Another major use of South Africaâs water is energy production (2 percent of national supply).In fact, South Africa is the worldâs fourth largest exporter of coal[1]. Finally, South Africaâs industry sector, which contributes about 29 percent of the nationâs total GDP, uses almost 11 percent of the nations water [1].However, because a large portion of South Africaâs industry sector is in mining, the sectorâs impact on water goes far beyond 11 percent a year.inally, South Africaâs industry sector, which contributes about 29 percent of the nationâs total GDP, uses almost 11 percent of the nations water [1]. However, because a large portion of South Africaâs industry sector is in mining, the sectorâs impact on water goes far beyond 11 percent a year.