The four main climate zones—tropical, subtropical, temperate, and polar—are designated because their greatly affects their temperature.

The answer is a latitude. The latitude is a measure of position north or south of the equator. Different latitudes receive different amounts of sunlight, and consequently different climate zones. For example, if the latitude is lower (places close to the equator), the angle of the sun’s rays that reach the Earth is wider. Therefore, the sun’s rays spread across a narrow area and more heat is received.

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