Which zones cover the smallest areas of Earth's surface?

The zones that cover the smallest areas of Earth's surface are the **Polar zones (high latitudes)**.

Here's a brief overview of the zones:

1. **Tropics (low latitudes)**: These regions, located between the Tropic of Cancer and the Tropic of Capricorn, cover a significant portion of the Earth's surface and are characterized by warm temperatures year-round.

2. **Temperature zones (middle latitudes)**: These zones lie between the tropics and the polar regions and cover a substantial area as well, characterized by varied climates with distinct seasons.

3. **Polar zones (high latitudes)**: These regions, which include the Arctic and Antarctic areas, have the smallest surface area compared to the other two zones. They experience extreme temperatures and extended periods of daylight and darkness.

Thus, among these, the Polar zones are the smallest in terms of surface area coverage.