Answer:
Latitude
Explanation:
Latitude is the geographic coordinate that determines the North-to-South location of a place in the Earth.
The Equator is right in the middle of the Earth, and areas around the equator tend to be warmer than areas far from the Equator.
The main reason is that mid-latitude regions are not affected by seasonal climate variation that is caused by the effect of Earth's titled angle on sunlight distribution.
While northern areas receive a lot of sun in the summer, and only a bit of sun in the winter, central equatorial areas receive a stable amount of sunlight throughout the year.
