What are at least 2 roles of paleontologists

determines location of fossils.

excavates layers of sedimentary rock to locate fossils.

gathers information on the fossils (age, location, etc)

uses specific tools to excavate (chisels, drills, picks, shovels, brushes)

evaluates any discoveries by using specialized computer programs.

hope this helps!

its temperature is increasing. this causes molecular vibrations to increase.

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.