3. Hover your mouse over the atmosphere and a pop-up window will appear. Answer these questions:
a. What are the primary gases in our atmosphere?
b. What 3 greenhouse gases are found in our atmosphere?

According the inverse square law, doubling the distance from the source of the sound, a speaker, for example, will drop the sound 6 db each time. if you were standing in the back of an auditorium, 32 feet away from a speaker not using any amplification, would you be able to hear a speaker clearly? why or why not?