Lawn mower and car: what they have in common

1. Step 1. Lawn mower — evolved from — Sickle. Mechanized mowing.
2. Step 2. Sickle — evolved into — Combine harvester. The machine replaced reaping by hand.
3. Step 3. Combine harvester — has part — Diesel engine. Self-propelled combines run on diesels.
4. Step 4. Diesel engine — is part of — Bus. The engine is usually a diesel.
5. Step 5. Bus — evolved from — Car. A bus is a passenger motor vehicle.

Open Evothings