what event brought the end of the Mesozoic Era? A. a minor earthquake B. the evolution of bacteria C. a global mass extinction D. one volcanic eruption
Explanation: The Mesozoic era is the era of dinosaurs and lasted 180 million years. This era includes 3 well-known periods - Triassic, Jurassic, Cretaceous. A mass extinction marked the beginning and the end of the Mesozoic Era. So your answer is C.