a cell is the smallest structural and functional unit of an organism
These global wind systems, in turn, drive the oceans' surface currents. Unequal heating of the Earth's surface also forms large global wind patterns. In area near the equator, the sun is almost directly overhead for most of the year. Warm air rises at the equator and moves toward the poles ((from google))
There are 3 machines in which convert straight motion to circular motions:
Answer is water wheel, windmill, and water turbine.
Hope it helped you, and have a great day!
-Charlie
