Answers

2015-03-17T15:13:37+08:00

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
For me, it's letter C, earth's tilt ,the earth's tilted must be the cause of change of length day, if earth's axis was not tilted, each night and day everywhere on Earth would always be 12 hours long and and there would no season at all.

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2015-03-17T15:36:27+08:00

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
The earths tilted must be the caused of the length of the day so my answer is letter C. earth's tilt. 

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