During which eon did the first bacteria appear? (if correct, will vote for brainiest)

Where is the vascular system located

5. what is a red giant? can our sun become a red giant? why or why not?

How have ethnic groups shaped the population in central america and the caribbean? how has migration shaped the population in central america and the caribbean? how has small land areas shaped population in central america and the caribbean? how has a rapid population growth shaped the population in central america and the caribbean?