Scientists believe that the Earth's orbit gradually changes from being elliptical to being nearly circular and then back to elliptical in a period of about 100,000 years. This causes global climatic change. The more elliptical the Earth's orbit, the greater the difference in (2 points)
A magnetic force on the Earth's closest and farthest locations from the Sun
B gravitational pull on the Earth's closest and farthest locations from the Sun
C solar energy received at the Earth's closest and farthest locations from the
Sun
D duration of days and nights at the Earth's closest and farthest locations from the Sun