2. Hypothesis “If... then... because...”

4. What was the independent variable? A. The ghost shrimp B. The type of aquarium C. The fish flakes D. The type of food

5. What was the dependent variable? A. The number of ghost shrimp in each corner of the aquarium B. The way the aquariums were set up C. The number of fish flakes D. The number of ghost shrimp in each tank

8. 100 mg of caffeine 50 mg of caffeine 25 mg of caffeine

9. 100 mg of caffeine 50 mg of caffeine 25 mg of caffeine

10. What was the independent variable? A. the number of days it took for the heads to grow back. B. the amount of caffeine in each jar. C. the type of jar used. D. the location of the jar.

11. concentration of Caffiene mg/L Time to grow back head (Days) 100 75 50 1 week2 weeks 3 weeks

12. 15 ml 5 ml10 ml 0 ml 15 ml 10 ml 5 ml

13. What is the dependent variable? A. the type of jello B. the amount of lemon juice C. The time it took for the jello to become hard. D. The amount of jello in each jar