I have some ideas , “does music effect on animal behaviour” and an experiment to that could be noticing the behaviour of a dog or cat without music then with music , i have more ideas if you don’t really like this one
I would have to say conspiracy.
The goldfish is a pet. In a home it is in a secure taken care of aquarium and will only grow to fit the size of the aquarium it is in.
The answer is carbon dioxide. im 100 percent this is right<span />