Species
of plants and animals that are at risk for disappearing from the planet are
considered to be endangered. It is different from being extinct because extinct
are when species cease to exist, they cannot be found or redeemed anymore.
While endangered species, there is still a chance of saving the species or also
a chance of extinction. The other choices are so opposite because abundance pose
no threat to environment unless they are disease causing organisms and thriving
species are close to endangered but still abundant.
