The Day and Night Cycle is a natural phenomenon caused by the rotation of the Earth on its axis. As the Earth spins, different parts of its surface are exposed to the Sun's light, creating daytime. When a location rotates away from the Sun, it experiences nighttime, resulting in a cycle that lasts about 24 hours. This cycle affects various aspects of life on Earth, including temperature, weather patterns, and the behavior of plants and animals. For example, many plants open their flowers during the day and close them at night, while some animals are active during the day (diurnal) and others at night (nocturnal).