Ice Ages, long periods of time when thick ice sheets cover large areas of the planet, have occurred throughout the history of the Earth. The most
recent ended about 10,000 years ago. At that time, it covered
approximately one-third of the planet with ice. These frozen periods
affected many aspects of the physical and human habitat of the Earth.
How would an Ice Age affect the biosphere?"

Answer// dinosaurs emerged during mesozoic era;

The reason why i feel that the theory of plate tectonics is correct because scientists have found dinosaur bones of the same species in africa, asia, and in the americas. which means that they must have been together at one point in time. plate tectonics is also how the hawaiian islands were formed. as the plate hawaii is on was moving north west, magma would melt through the sea bottom and hardening. forming into the island chain. plate tectonics also explains the mariana trench. two plates were moving away from each other and made a giant crack in the ocean floor running 2,550 kilometers (1,500 miles)  long.

Answer india