A scuba tank is contaminated with 2% carbon monoxide. If you were to dive with it at 20 meters what would the equivalent affect be?

c.) 6%


Underwater it is difficult to determine where a sound comes from because sound travels  _____ times faster in water because water is ___________ than air.

a.)   4 / colder

b.)  4 / warmer

c.)   4 / denser

d.)  2 / denser

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