1. a study is being done to test the effects of habitat space on the size of fish populations. different sized aquariums are set up with six goldfish in each one. over a period of six months, the fish are fed the same type and amount of food. the aquariums are equally maintained and cleaned throughout the experiment. the temperature of the water is kept constant. at the end of the experiment, the number of surviving fish are surveyed. What is the independent variable? o The water temperature o The number of fish originally in the tank o The amount of food that the fish receive o The number of surviving fish o The sizes Of the aquariums