Question

1. Adding different amounts of fertilizer to four different aquariums.
A.Variable is Independent
B. Variable is Dependent

2. Adding different amounts of salt to two different aquariums.
A.Variable is Independent
B. Variable is Dependent

3. Measuring the breathing rate of fish over time.
A.Variable is Independent
B. Variable is Dependent

4. Changing the temperature of the water in an aquarium.
A.Variable is Independent
B. Variable is Dependent

5. Observing the change in salinity of water over time.
A.Variable is Independent
B. Variable is Dependent