A "cP" air mass would bring what type of weather: (Please help!!!)
A) cold and moist
B) cold and dry
C) warm and dry
D) warm and moist

How do you date a sample of rock that you suspect as being one of the earliest on earth

Select the true statements about eubacteria. most live as decomposers and heterotrophs. most only thrive in a narrow range of environments. certain eubacteria are responsible for food poisoning. eubacteria thrive in extreme environments.

Asquirrel population lives in an area. over many years, a river in that area grows wider and stronger, eventually forming a canyon. the squirrel populations on the two sides of the canyon can no longer mate with each other and ultimately form distinct species. this is an example of