Why should a person who sells fish and fish aquaria learn about the excretory systems in animals?
a. So that they can understand how gastrointestinal disease spread among aquatic animals
b. So that they can get a license to sell exotic fish
c. So that they can maintain the salinity (amount of salt) of their aquaria to keep their aquatic animals healthy

C. So that they can maintain the salinity (amount of salt) of their aquaria to keep their aquatic animal healthy.

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cultural achievements of the 1920's 2010  

1. cultural achievements and african american achievements in the 1920’s  

2. art and literature charles lindberg flew from ny to paris, france. became national hero; first transatlantic flight.  

3. greenwich village (new york) and the south side (chicago)  many artists, writers, and intellectuals flocked to these areas to share ideas  people lead bohemian, or artistic and unconventional, lifestyles