Question

which of the following would decrease environmental quality?
draining a wetland
replanting a logged forest
reintroduction of a native species
cleaning an oil spill

Explanation:

Draining a wetland disrupts its ecosystem, reduces water - purification capacity, and destroys habitat for many species. Replanting a logged forest, reintroduction of a native species, and cleaning an oil spill are all positive actions for the environment.

Answer:

draining a wetland