Loading video formats, please wait... If the video buffers too much, choose a lower quality from the selector above.
Day 4
Wikipedia Context
A day is the time period of a full rotation of the Earth with respect to the Sun. On average, this is 24 hours. As a day passes at a given location it experiences morning, afternoon, evening, and night. This daily cycle drives circadian rhythms in many organisms, which are vital to many life processes.
Full ArticleDescription
Bakasyon kuno