Which factor or factors are responsible for the timing and severity of the numerous ice ages that occurred over the past 800,000 years?

Explanation:

This question has asked that we give the factors that are responsible for the timing and severity of numerous ice ages that has occured over a period of 800,000 years

These factors are

1. solar radiation interaction,

2. Existing distance between the earth and the sun,

3. The height of continents and there positions,

4. Composition in the atmosphere

5. and circulation of the ocean.

i thinking chemical change