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Why do oceanic plates tend to subduction when colliding with a continental plate

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)

Where does oogenesis take place ? seminiferous tubules fallopian tubes ovaries uterus