How did the separation of America from Afroeuroasia affect the development of ecosystems in the Americas?

Rachel carson 1962 silent spring was a groundbreaking work regarding what topic

Me ! which of the following statements describes how the punic wars contributed to the development of the roman empire? a)they allowed the romans to focus more on expanding into the western mediterranean. b)they resulted in the overthrow of the roman republic and establishment of the empire. c)they marked the end of roman expansion in the mediterranean region. d) they forced the romans to reorganize their government with an emperor as ruler.

Experimented with communism before taking part in a number of civil rights and antiwar protest