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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hi there!

question - in the 1900s there were two competing views about the environment that often pitted industrialist and conservationist against one another. how were these two competing views demonstrated by the environmental policies of president roosevelt and president taft?

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it was douglas macarthur..