Answer:
D
Explanation:
The trout are disappearing from the river because of the thermal water pollution, which is causing the high water temperatures.
Mostly any bug you can think of
Working down mate, my best answer would be carbon monoxide, but I'm not studying exactly what you are. All those answers are logical except ozone.
Well there will be an abundant as of rabbits. It becomes a problem when there is no predator to hunt them. If there is an over-abundance without a predator it many cause other species such as plants to become endangered. In conclusion, a balance in the ecosystem is vital.
