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| Description: It is because the axis is tilted that we have seasons. (a) The tilt of Earth’s axis of rotation changes from 22.1 to 24.5 degrees and back in a 41,000-year cycle. At higher latitudes, even the shift of a few degrees can cause a significant change in the intensity of solar radiation. Picture Stats: Views: 495 Filesize: 184.09kB Height: 862 Width: 1402 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=22501 |