The Earth being tilted on its rotating axis causes seasons, and spring, summer, autumn, and winter are the seasons of the year. Given these facts, what causes spring, summer, autumn, and winter among the following options:
- meteor showers
 - heat production
 - the sun's energy
 - Generating heat
 - Earth tilted on rotating axis
 - Something with a head, thorax, and abdomen
 - Earth vibrating
 - lunar cycle


 

     Earth tilted on rotating axis    