How It Works
Why do some species exist for millions of years and others a lot less?
A species’ survival depends on both its ability to adapt and its environment. Living things are continuously undergoing subtle changes to better suit the environment around them. During periods of particularly rapid climate change, the introduction of new diseases or the addition of new predators, some species cannot adapt quickly enough to survive. A genetically diverse species is more likely to survive, while those subjected to less change may survive for longer.