Combine harvesters

The video explains the challenges of harvesting cereal crops and introduces the combine harvester, a machine that simplifies the process by combining several tasks. It describes how the harvester reaps, threshes, and separates grains from the plant, using sieves to ensure only grains are collected. The video concludes by highlighting the efficiency of the combine harvester in gathering grains into a collection tank for further processing.

How does the size of the mesh in a combine harvester affect its operation?

Explain how the combine harvester combines several harvesting jobs into one machine.