8. To personally manage nonrenewable resources wisely, you could A. work with others to reclaim mined lands.
B. use renewable energy resources whenever possible.
C. increase the amount of vampire energy you consume.

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".