The process is called threshing. It is carried out using a machine called a ‘combine,’ which functions as both a harvester and a thresher. NCERT Class 8 Science Chapter 1 Crop Production and Management

Farmers should use weedicides carefully to avoid health risks. During application, they should cover their nose and mouth with a cloth to protect against potential adverse effects on health. NCERT Class 8 Science Chapter 1 Crop Production and Management

Green plants synthesize their own food through a process called photosynthesis, where they use sunlight, carbon dioxide, and water to produce glucose and oxygen. NCERT Class 8 Science Chapter 1 CROP PRODUCTION AND MANAGEMENT