Biology, 12.07.2019 02:50, cameron1357

The sound of a police siren that is moving away has (1) wavelengths, and one that is approaching has (2) wavelengths. 1) a. longer b. higher c. shorter 2) a. lower b. longer c. shorter

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The sound of a police siren that is moving away has (1) wavelengths, and one that is approaching ha...