Which of the earth's atmospheric layers is the closest to the earth?
A.
troposphere
B.
mesosphere
C.
stratosphere
D.
thermosphere

Which of the following matches the organisms described with the correct domain? a. bacteria--unicellular, eukaryotic organisms with cell walls that do not contain peptidoglycanb. archaea--multicellular, eukaryotic organisms that do not have cell wallsc. eukarya--single-celled and multicellular organisms, with a defined nucleus and a variety of nutritional sourcesd. bacteria--unicellular, eukaryotic organisms that always lack cell walls

Which two factors contributed to creating a global culture? the creation of the united nations improvement in telecommunications health issues such as the ebola virus increased opportunities for global travel

Which of the following types of stars are dim but can have high surface temperatures? giants main sequence stars supergiants dwarfs