when would evaporation be a good method for separating the parts of a mixture? a when the boiling points of the components or different b. when some of the components or magnetic c. when the densities of the components are different d. when some of the components are very small

i have to report this, it doesn't relate to biology

the answer is c) an oak tree

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".

it's not c. i took the quiz and got it wrong. so my best guess is b.

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