Freshwater protozoans must be able to maintain homeostasis within their environment. one of the problems they face is water diffusing into their cells from the environment. how do they address this issue?
a) freshwater protozoans respond to the hypotonic environment by removing water through a pseudopod.
b) freshwater protozoans respond to the hypertonic environment by removing water through a pseudopod.
c) freshwater protozoans respond to the hypertonic environment by removing water through a contractile vacuole.
d) freshwater protozoans respond to the hypotonic environment by removing water through a contractile vacuole.