I Asked You to Cultivate Species, and You Created a Jurassic?

As time changes, all the land becomes desert, all animals become extinct, and only humans remain. Everyone must cultivate a certain number of species before graduating, otherwise they will not be able to open up their own territory. Lu Ran is also one of the many students who have been trained. At this time, the system is turned on. "Ding! You created the first level Jurassic ecological zone and obtained the source of Tyrannosaurus rex species!" "Ding! You created the second level of the tropical* original ecological zone and obtained the source of lion species!" "Ding! You created a first-level mountain ice and snow ecological zone and obtained the source of snow leopard species!" "..." Just when everyone was immersed in studying cell culture technology. Lu Ran has created countless ecological zones, mountains and polar regions, plains and lakes, creating a prosperous era of life! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.