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A season is a division of the year marked by changes in weather, ecology and hours of daylight. Seasons result from the yearly orbit of the Earth around the Sun and the tilt of the Earth's rotational axis relative to the plane of the orbit.
The revolution of Earth around the sun is the primary reason for seasonal changes.... Weather differs every day due to changes in heat, wind and moisture. The revolution of Earth around the sun is the primary reason for seasonal changes.... Weather differs every day due to changes in heat, wind and moisture. The revolution of Earth around the sun is the primary reason for seasonal changes. Weather refers to the condition of Earth's atmosphere at any given time, and includes temperature, air pressure, precipitation and cloud cover.