Why was the ice age an important factor in the populating of north america?

How did his exploration his country sir walter raleigh

Which sentence best describes the relationship between chlorophyll and the chloroplast? a.)chlorophyll is a chemical found in a chloroplast. b.) chloroplast is a chemical found in a chlorophyll. c.) both chlorophyll and chloroplasts are found in animals. d.) both chlorophyll and chloroplasts make carbon dioxide.

What man proposed a solution to the issue of slavery in the territories suggesting the idea of popular sovereignty