The IPCC AR5 states " It is virtually certain that orbital forcing will be unable to trigger widespread glaciation during the next 1000 years" What does the report mean by "orbital forcing? a-Changes in the output of the sun
b-Changes in the Sun's mean distance from the center of the galaxy
c-Changes in the Sun's mean distance from the center of the galaxy
d- Changes in the albedo of other planets in the solar system