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Which of the following is an eon in the time scale? phanerozoic proterozoic archean all of the above

Adescription of a type of bio biotechnology (genetic engineering, cloning, or artificial section) one benefit or one risk for the individual (based on whether you are for or against it) one benefit or one risk for society (based on whether you are for or against it) one benefit or one risk for the environment (based on whether you are for or against it)

Physical characteristics of down syndrome