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Natural selection acts on A) MutationsB) The needs of an speciesC) Randomly produced variationD) The sex cells
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- A process in which natural selection is seen to operate among variant, related species within a single genus, family or order, is calledA) Species selectionB) Gradualist transformationC) Reverse speciationD) All of the above
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- Evolutionary theory is based on a set ofA) Testable hypothesesB) Scientists' opinions about different speciesC) Assumptions about when life beganD) Observations of the natural world