False because there is no need when writing a sentence but when doing a paragraph or essay yes
A is the correct answer because a prepositional phrase is telling where something is located. so a is saying that the envelope is in the drawer.
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.
True
it’s way worse than you think
