Question

What is the difference between a threatened species and an endangered species ?
a.

A threatened species and an endangered species are the same thing.
b.

A threatened species means that the population is likely to become endangered. An endangered species has population numbers so low that it is likely to become extinct.
c.

A threatened species is already extinct. An endangered species means that the population's numbers have increased greatly over the last 5 years.
d.

A threatened species means that the population is likely to become endangered. An endangered species is alre