Bio 102 gleeson Based purely on our understanding of planet formation in this solar system, we would EXPECT earth’s atmosphere to have very high levels of , fairly low levels of , and extremely low (or even zero) levels of .

the period of human evolution has coincided with environmental change, including ('hominin' refers to any bipedal species closely related to humans – that is, on how do we know earth's climate has changed? a map showing dates and locations of prehistoric archeological sites and migration routes from africa into.

b because thats the naswer i got

answer; cindy crawford tina feycarrie underwood///meryl streep;