Answer:
Hypothesis is ''With the increase of algae in the aquarium, fish population decreases''.
Explanation:
The main problem was that there is no need for 2 aquarium because there is no need for aquarium 1 which has no fish and aquarium 2 which has fishes but no algae. With the increase of algae in the aquarium, fish population decreases is the hypothesis for this experiment. Concentration of algae is the independent variable of the experiment because there is no effect on it in the experiment.
Parasympathetic. Sympathetic would be most active because it is your autonomic fight or flight response. The parasympathetic nervous system is more commonly known as rest and digest so, it slows your heart rate, increases blood flow to internal organs, and outputs epinephrine
