HYPOTHESIS: The amount of salt in the hatcheries will affect the hatch rate of the eggs after 24 hours.

PROCEDURE: Each class will set up 4 hatcheries with the exact same variables except for the amount of salt in the water. Hatcheries will contain the following amounts of sea salt:
1. no salt (the control)
2. 1 teaspoon
3. 5 teaspoons
4. 9 teaspoons
The hatcheries will sit over night to allow the chlorine to dissipate before the eggs are added.
Then, after 24 hours students will count the hatched shrimp and compare the numbers in each hatchery. Experiment results will be published here and in each student's Science Journal.