4 The diagram below represents the nitrogen cycle in a student's aquarium. Ammonia, nitrites,
and to a lesser degree, nitrates can be harmful to fish. The student wants to keep the
nitrogen in thus aquarium cycling normally without having to continually change the water.
Which of the following should the student add more of to help remove nitrates and improve
the natural cycling of nitrogen in this aquarium? *
(1 Point)
CO
5077
Carbon dioxide
Carbon dioxide (CO)
and ammonia (NH)
Ammonia
Fish
and food
Nitrates
(NOG)
Nitrites
(NO)
Removed by
plants and water
changes
Nitrobacter
(bacteria)
Nitrosomonas
(bacteria)