A threshing machine is a piece of farm equipment that removes the seeds from stalks and husks. It revolutionized farming by dramatically increasing productivity.
Think about eating popcorn at a movie. You want to eat only popped kernels (seeds) but not unpopped ones (husks). A threshing machine is like your hand picking out all good popcorn pieces while leaving behind unpopped ones.
Winnowing: An agricultural method developed by ancient cultures for separating grain from chaff. It's done by throwing mixture into air so wind blows away lighter chaff, while heavier grains fall back down for collection.
Combine Harvester: A modern machine that combines three separate harvesting operations - reaping, threshing, and winnowing - into a single process.
Mechanization: The process of changing from working largely or exclusively by hand or with animals to doing work with machinery. In an agricultural context, mechanization increases efficiency and productivity.
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