Question

1. besides plants, what is another source for oxygen in a fish tank? thermometer aerator/air pump oxygen? fish dont need oxygen clear all

Explanation:

An aerator/air pump can introduce air into the fish - tank water, increasing the oxygen content. Plants produce oxygen through photosynthesis, and an aerator is another common way to supply oxygen. A thermometer measures temperature and fish do need oxygen to survive.

Answer:

Aerator/Air Pump