What part of speech is extinct?

Information about the ice age? Where was the groung sloth remains found? Where was petrol invented? What are the ancient weapons used by the early man in stone age? How did new ways of hunting and making clothing affect the prehistoric people? What country has the oldest records of civilization in East Africa? Did centaurs really exist a long time ago? Whose cattle did Odysseus' men kill? How did cattle drive begin? What types of farming tools were created in the Neolithic Age? What were products of neolithic culture? Why were animals so important in Egyptian art? What is a homophone for prey? If a mammoth were a live how long could it live for? Who are geothermal's primary consumers? What is Poseidon sacred tree? Did the early spanish hunt for food? What bird became modern looking in the Miocene epoch? What is a palaeoethnobotanist? What characteristic describes prehistoric societies?