Match the physical characteristics of the organisms to their purpose. tiles pilli cilia flagella pseudopods pairs thin, hairlike structures used for locomotion long, tail-like structure used for locomotion feetlike projections to capture a potential prey used to hold onto rocks

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relative dating involves things like higher layers are most recent than rocks lower in the sequence. this can be extended to the known sequence of fossils. rocks containing rabbit fossils are later than those containing dinosaur fossils.  

absolute dating methods mainly use radioactive elements that have known rates of decay and produce recognizable products. for example potassium 40 decays to produce argon. once a rock has solidified the argon is trapped. by measuring the argon and potassium0 you can get an accurate number for the age.  

some other methods are good for archaeological ages. dendrochronology involves recognizing the sequence of tree rings. the orientation of magnetized particles in baked clay can be used to date a fire.

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this protocol provides a detailed procedure for agarose-based ip to purify and enrich the protein of interest.