Which is not an idea geologists use as they study earth?
the rock record provides evidence of past geological events and life forms.
earth is very old and has changed over time.
the rock record provides evidence of past human civilizations.
processes in the present were the same in the past.

Processes in the present were the same in the past.

Explanation:

The planet earth has gone through several periods of evolution, modified its structure, composition, climate, atmosphere, fauna and flora as time went by. For this reason, we can affirm that, currently, the natural state of the earth, is completely different from the way this state was presented millions of years ago.

All this change causes and is influenced by chemical, physical and biological processes, which have also changed over time to be consistent with the current reality of the planet.

In this case, we can conclude that the processes in the present are not the same in the past and scientists must take this into account when they are establishing their studies.

answer: b: experiments that showed that all cells are similar in how they metabolize and in their composition

explanation: