Agriculture
Agriculture is the practice of cultivating land and raising animals for food, fuel, fiber, and other products used to sustain life. It involves growing crops, managing soil fertility, controlling pests and weeds, harvesting crops, and raising livestock. Modern agricultural practices include crop rotation, irrigation systems, improved seed varieties, fertilizers and pesticides, machinery for planting and harvesting crops, and genetic engineering of plants. Agriculture plays an important role in providing food security for billions of people around the world.