Question

an organism facing
extinction through
destruction of habitat;
the process may
threaten the survival,
abundance or
evolutionary
development of the
species.

this is the ceasing of
the existence of any
particular species.

extinction pollution threatened species
greenhouse effect ph

Explanation:

The first definition describes an organism at risk of extinction due to habitat destruction, which matches "Threatened Species". The second definition refers to the end of a species' existence, which is "Extinction".

Answer:

First box: Threatened Species
Second box: Extinction