1) preserved remains of living organism a) biodiversity b) fossil 2) history of life on Earth, documented by fossils a) fossil record b) mass extinction 3) the variety of species on Earth a) extinct b) biodiversity 4) when all members of a species die a) fossil b) extinct 5) large number of species go extinct over short period of time a) fossil record b) mass extinction 6) requirements that must be met for engineering solution to be successful a) criteria b) fossil record 7) limitations on an engineering solution a) mass extinction b) constraints

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