Bioremediation classifying the species
as endangered
reforestation
construction of a
wildlife corridor
A population of channel catfish is threatened
by a high level of pollution in a river.
A large highway prevents yellow-spotted
salamanders from traveling to their
breeding grounds.
The loss of vegetation in a forest reduces
the survival rate of eastern bluebirds.
The hawksbill sea turtle is in decline because
of excessive hunting and exploitation.