The three eras within the phanerozoic eon are paleozoic (ancient life), (middle life), and cenozoic (recent life).

Which of the following could affect the human population? a hurricane makes landfall on an uninhabited island.a deadly virus emerges that can pass from human to human.a civil war breaks out in italy.a solar eclipse occurs.

During the era of european expansion, what was the biggest reason for spain’s push for exploration?

What new deal programs would have had the largest impact on rural electrification during the 1930s?