Aresearcher studies the role of homeostasis in the survival of freshwater protozoans and notes that most regulate their internal water and salt concentrations. when the researcher investigates how freshwater protozoans respond in a marine environment, which hypothesis is valid?

i think it would be b. tissue because an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.

ya the other dude is right

you can have just about every answer you can think of