Scientists have found that the earth's orbit gradually changes shape over a period of about 100,000 years. which of these statements best predicts a long term effect of the changes in the shape of the earth's orbit?

Global warming and Global cooling. As the Earth's orbit becomes more elliptical, (as it is now,) it begins a Global warming and enters into an Interglacial period, when the Earth is mostly warm. When the Earth's orbit becomes more circular around the sun, (as it has been at least two or three times before so far,) it begins a Global cooling and enters into a Glacial period. I hope that this helps!

All of them are man made