When food in supermarkets passes its sell-by date, though, it gets swept off the shelves. Often, it's donated to food banks. Sometimes it's auctioned off. But if you discover such food in your pantry at home, there's really no reason to throw it out.
Production lifecycle. The primary sector of the economy is the sector of an economy making direct use of natural resources. This includes agriculture, forestry, fishing and mining. In contrast, the secondary sector produces manufactured goods, and the tertiary sector produces services. The primary sector is usually most important in less-developed countries, and typically less important in industrial countries.
Secondary Sector. Staying on track, we move from the primary sector to the secondary sector. The secondary sector takes raw materials from the primary sector and manufactures them into goods. In other words, the secondary sector is the second step on the path from the earth to the consumer.