The Earth's seasons can be attributed promarly to which of the following in conjunction with its revolution about the Sun?
a) the tilt of the Earth's axis of rotation relative to the ecliptic
b) the varying amount of sunspot activity
c) the Earth's orbit about the Sun as an eclipse rather than a circle
d) the rotation of the Earth during a 24-hour day

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Answers

2014-03-10T19:07:00+08:00