What part of speech is extinct?

What were Bone Harpoons used in the early stone age? Did Cleopatra own a panther? Did Medusa live in atlantis? How does human activity affect the atmosphere? What did Medea give Jason to protect him from the fire breathing bulls and to make the dragon sleep? How many buffalo were living on the great plains before Lewis and Clark crossed them? Who invented crocs? Why was it called the glided age? What is the original name of the Galapagos Islands when they were first discovered 300 years before famous naturalist Charles Darwin's visit and were considered a pirate's paradise? What do the fossil fuels look like? What does keya paha mean? What continents have fossils of similar species? What is the word extinct in french? What was the first plant to be domesticated in the new stone age? This era has been called The Age of Animals? Where do you go after you get the hydra scale the whisker the pearl the ring and the flower on Mythology island? What did cyclops sound like? What are some advantages of fossile fules? What would you consider to be primeval piece of technology? What tools does Brian make and for what does he use them?