Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Second Green Revolution is a change in agricultural production widely thought necessary to feed and sustain the growing population on Earth. These calls have precipitated in part, as a response to rising food commodity prices, and fears of peak oil among other factors. The primary sector of the economy involves changing natural resources into primary products. Most products from this sector are considered raw materials for other industries. Major businesses in this sector include agriculture, agribusiness, fishing, forestry and all mining and quarrying industries.