The lowest pitch that the average human can hear has a frequency of 20.0 Hz. If the wavelength of this wave is 16.5 m, what is the speed with which this sound travels through the air? Find the velocity, frequency, and wavelength.

On the galapagos islands charles studied finches

If football was tossed in air without gravity or friction the ball would go into space

Honestly "global warming" may be a slight possiblity, however they called it "climate change" because its not real, in fact we had one of our coldest days here not too long ago, and the "issues" with this subject is a blindfold for actual problems.