well it could be the fish breathing or or there is movement such as fish turtles alligators or its a haunted pond or even a tadpole or many other choices but those are the top reasons. I hope I helped you.
parce que....
Oxygen is a by-product of photosynthesis.
Yes, pond weed produces oxygen, because it photosynthesises. The oxygen can be seen as bubbles
Animals carrying bubbles at the surface of a pond might be using them as air reserves for diving. On the other hand, animals carrying bubbles at the bottom of a pond might be using them for buoyancy, to help them stay grounded or lift heavier objects.
Move the light source closer to the apparatus.
you chew it
Air that is blown in to the buble is kept in side only by a thin layer of liquid. So really it is air that makes bubbles.
Because the cold water makes the bubbles colder and then the bubbles may pop.
sulfate
Air bubbles.
No they don't u buy the bubbles separately
'Water to Ducks' is the name of the episode where George makes a pond out of his swimming pool for a family of ducks.