How to Prepare for Volcanic Smog

Materials: SyringeDesk lamp Hole punchPetri dishes (4 per group) Detergent and baking soda solution Detergent solutionFresh spinach leaves ForcepsProcedure:1.Test the syringes by sealing the tip and pulling back on the plunger. When released, the plungershould snap back, indicating a good vacuum. ................
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