Question

which is a way that paleontologists have contributed to humans understanding of the history of life? they learned that life has existed since earth was created. they discovered that the first humans lived with dinosaurs. they grouped organisms by the period in which they existed. they found evidence that climate has not changed significantly.

Explanation:

Paleontologists study fossils to understand the history of life. Grouping organisms by the period in which they existed helps in creating a timeline of life - forms and understanding the evolution and succession of species over geological time.

Answer:

They grouped organisms by the period in which they existed.