Why does the equator receive more radiation then north or south?

The equator receives more solar radiation than regions to the north or south because it is oriented perpendicularly to the sun's rays throughout the year. This direct sunlight results in higher solar intensity, leading to warmer temperatures. In contrast, areas at higher latitudes receive sunlight at a more oblique angle, spreading the energy over a larger area and reducing its intensity. Consequently, the equatorial region experiences consistently warmer climates compared to the polar and temperate zones.