10. Which of the statements is true of saltwater and freshwater animal waste management systems?
A. Saltwater-based animals must have a mechanism to prevent water from trying to diffuse into their bodies
B. Both saltwate and freshwater animals don't need to eliminate waste, as it diffuses out of their bodies naturally
C. No saltwater or freshwater animals urinate.
D. Freshwater-based animals must have mechanisms to prevent water from trying to diffuse into their bodies.
