JoAnna read that certain perfume esters would agitate bees. Because perfume formulas are secret, she decided to determine whether the unknown Ester X was present in four different perfumes by observing the bee’s behavior. She placed a saucer containing 10 mL of the first perfume 3 m from the hive. She recorded the time required for the bees to emerge and made observations on their behavior. After a 30-minute recovery period, she tested the second, third, and fourth perfumes. All experiments were conducted on the same day when the weather conditions were similar; that is, air temperature and wind.

7. What are four constants for this experiment?
8. What is the dependent variable?

Four constants for this experiment could include the saucer size (10 mL), the distance from the hive (3 m), the recovery period (30 minutes), and the weather conditions.

The dependent variable in this experiment is the bee's behavior, specifically the time required for the bees to emerge.

4. Constants for this experiment would include:

- The volume of perfume used (10 mL)
- The distance of the saucer from the hive (3 m)
- The duration of the recovery period (30 minutes)
- The similar weather conditions (air temperature and wind)

5. The dependent variable in this experiment would be the behavior of the bees (specifically, whether they are agitated or not) in response to the perfumes.