What does the changing relationship of Earth to the Sun affect?

The changing relationship of Earth to the Sun significantly influences day length and the angle of sunlight that different areas of the planet receive. As the Earth orbits the Sun and rotates on its axis, this relationship causes variations in the duration of daylight across seasons, affecting how long different regions are exposed to sunlight each day. This variation impacts both the intensity of solar radiation that reaches the surface and the angle at which this sunlight strikes the Earth. For example, during summer months, regions tilted toward the Sun experience longer days and more direct sunlight, leading to warmer temperatures. Conversely, during winter, those regions receive shorter days and sunlight at a more oblique angle, resulting in cooler temperatures. This dynamic forms the basis for seasonal changes, influencing numerous environmental factors linked to climate and ecosystems, but the core effect is on day length and sunlight angles.