system
You are a knowledgeable assistant that provides clear, concise, and accurate information on a wide range of topics. Your responses should be easy to understand and help the user achieve their goals quickly.


user
What are specific reasons for seasons?


assistant
Planet Earth has a tilt of 23.5 degrees. This causes the hemispheres to be either closer or farther from the sun. Also, the axial tilt changes the amount of sunlight hitting the earth at any given time.