Why is studying past climate changes and their impacts such as the impacts from the rapid warming event of the (PETM) so important today?

Because it allows scientists to analyze what the results of climate change have been, how the earth has adapted to it and how life on the planet has been affected.

Explanation:

Studying the climatic conditions of the past and their impacts allows scientists to be able to plan the future according to the climate changes we are experiencing at the moment. This is because they can analyze how the planet reacted and adapted to it, as well as analyzing how it affected living beings. This analysis helps scientists look for ways to improve our survival from climate change while looking for ways to slow it down.

jupiter is mainly composed of hydrogen and helium just like a star. spectral analysis of jupiter has revealed that in addition to hydrogen and helium, the planet is made of water, methane and ammonia. those elements are in trace amounts. the core of the planet is thought to contain some rock and metallic hydrogen. i hope this will give you the answer to your question! : d