How have paleontologists contributed to humans' understanding of the history of life? Check all that apply.

They created a record of life on Earth.
They grouped organisms by their similarities.
They grouped organisms by the period in which they existed.
They discovered that the first humans lived with dinosaurs.
They discovered that life has existed since Earth was created.

They created a record of life on Earth.

They grouped organisms by their similarities.

They grouped organisms by the period in which they existed.

Explanation:

hope I helped enough

b) the importance and limits of political power.

the outcome of 1970 oil crisis in united states was that, they began to search ways on how to reduce oil.

in 1970 was a period when there were energy and oil crisis. those who were major centers for industrialization were forced to keep way from supplying of petroleum.

some of the result of this crisis was economic growth became stagnant because prices of oil surged.

due to the increased prices some countries like mexico and norway benefited.