Humans are the biggest threats to any other species on Earth. And that what makes some of them endangered, especially extinct. Human activities-related causes such as poaching, habitat destruction and degradation, the introduction of non-native species, over-exploitation, pollution, disease, and many others do harm other species’ survival.
How could extinction happen? Extinctions happen when a species dies out from many causes. To some extent, extinction is natural. And now, human civilization has harmed most living things.