The shape of earth’s land masses and the of tilt its axis could have triggered climate changes in the past .

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Explanation:

The shape of earth’s land masses and the of tilt its axis could have triggered climate changes in the past.  This would be due to the elliptical orbit of the earth.

Elliptical orbits are basically a path made in a repeated way that resembles the description of an ellipse.

It is like the case of the planet Earth, for example, which performs a movement along an elliptical orbit around the Sun, although the eccentricity is small, so that it can be approximated by a circle, depending on the rigor of the analysis. However, this way of orbiting can cause climatic changes, because the incidence of the sun on the planet occurs with different and not homogeneous angles.

true tan speed = ang vel x radius