Before you purify water, you should check the color of your iodine tablets. Use
only those tablets that are:
d. Steel gray.
You have filled a two-quart canteen with water from a stream. How many
iodine tablets should you put into the canteen?
You have added iodine tablets to a canteen of water. You should wait ________
minutes, shake the canteen, disinfect the threads, and wait ____________ more
minutes before drinking the water.
When you wash your hands, you should wash them with soap and water for at
a. Fifteen seconds.
b. Thirty seconds.
d. Two minutes.