Since the dawn of life,species have appeared and later vanished.Some flourished for millions of years.Others exist for "mere" centuries.This coming and going is natural.Natural changes in global environment usually occur slowly.They may favor some species over others.All species experience slow shifts in their fortunes.
A habitat supplies an organism with basic needs such as soil,food,water,and shelter.Habitat range
Hunting and trading
In the early 1800s, 2 billion pigeons flew over North America.Hunters slaughtered them for sport and for food. The last one died in a zoo in 1914. Whalers in 1800s drove several species to near extinction for their oil and blubber.