Select all of the answers that apply. what major factors affected earth's changing climates?

As per the question attached the major factors that affected the earth's changing climates are -

Meteor impacts, volcanic gases, and Milankovitch cycles.

These are those factors which drastically impacted the climate on earth.

Meteor impact involves the entry of a small meteoroid into the Earth's atmosphere which changes the climate of earth.

Volcanic gases from the volcanoes increase the climatic temperature.

Milankovitch cycles determines the climatic changes in earth by the relative  changes in the earth's revolution around the sun.

when it is at an intermediate population density