The layers of the atmosphere differ in temperature and density.
The right answer is the last answer:)
Darwin's argument tells us that species develop their traits through natural selection due to competition, survival and reproduction. Diversification of species is an important part to make his argument valid because diversification suggest extinction of specie if it doesn't survive.
Answer:
C. wanted
Explanation:
Replacing wanted with something like "was forced" would give the sentence a negative connotation, and the rest of the options are essential to basic information the sentence provides.
