Why did natural climate change start (not human-caused)

As we all know, the earth has gone through warm and cool phases in the past, and long before humans were around. Forces that contribute to climate change include the suns intensity, volcanic eruptions, and changes naturally occurring greenhouse gas concentrations.

Hopefully this helped

Magma forms by partial melting of upper mantle and crust. partial melt means that only a fraction of the available material forms a melt, and that the remainder stays solid. the partial melt rises because of its lower density and ascends through he crust. this is so conclusive mean the answer would be magma igneous rocks or balistic magma.

Icant awnser the qustion bc u have the planets not listed