Which of the following ideas is supported by darwin's observations of local variation among tortoises in the galapagos islands?
a: artificial selection
b: adaption
c: acquired characteristics
d: tendency towards perfection

Which of the following is a cause of a dna mutation? o a. the linking of amino acid subunits into a long chain o b. the transcription of dna into rna o c. an error in the repair of damaged dna d. the diffusion of molecules across the cell membrane submit

In some plants, pointed leaves (p) are dominant over rounded leaves (p). a plant with a genotype of pp

All but one describes an effect of aging on the digestive system. a) decreased acid secretion b) decreased elasticity of stomach c) capacity to resist damage decreases d) food remains in stomach for less time