When did Paleolithic start?

Why was there so little room for grazing animals in ancient Egypt? How do siskins look like? What was the role of feasts in the Ice Age? What of these items would not have been available during the Neolithic period? What is precell? What was the primary causes of desath in the pre-historic period? Were is pridot found? Who invented bunnies? How did Paleolithic people adapt to their environment during the Ice Ages? Besides humans what is the best maker of tools? What was humans main food source in paleolithic era? What are Hestia sacard animals? What process causes organic remains to turn into fossil fuels? Which genus of humans made the first tools? What does Odysseus's failure to wake up and prevent his men from slaughtering the sun god's cattle signify? Is it ok for deer to eat cattle mineral? Where is the pot in the cave in time tangled island? What predators are there in wolfquest 2? Are megletdons real? What is prehilion?