The Earth's position, relative to the sun, affects the climate, environment, and geography, (as well as everything else on the planet). Due to the gravitational pull of the sun as well as the gravity from the moon, the Earth is kept in constant rotation around the sun, creating the cycle of seasons and months in both hemispheres and daylight. Spinning on its own axis and in its orbit, the amount of light and heat from the sun is converted into energy by life on the planet, creating the cycles of carbon, water, and erosion.