a student wanted to observe how changing the temperature of the aquarium water would affect the breathing rate of his golfish. What are all of the variables in this question?

Ithink it is c ,i hope i you

Honestly "global warming" may be a slight possiblity, however they called it "climate change" because its not real, in fact we had one of our coldest days here not too long ago, and the "issues" with this subject is a blindfold for actual problems.

That big glowy thing in the sky is called the sun