The idea that Earth was the center of the universe is an example of that has long been discarded. a hypothesis a law an observation an experiment

A hypothesis

Explanation:

This was a hypothesis, because it was a theory only based on limited evidence.

It served as a starting point for scientists to later investigate and prove whether it was true or false.

which elements do geologists measure to determine the age of an organism’s remains? check all that apply.

carbon-14

nitrogen

carbon-12