The largest mass-extinction in the world is considered to have happened about 252 million years ago due to quick global warming or climate change. A new study shows how some ancestors of mammals are believed to have survived this mass-extinction.…
The largest mass-extinction in the world is considered to have happened about 252 million years ago due to quick global warming or climate change. A new study shows how some ancestors of mammals are believed to have survived this mass-extinction.…