Tista fish that are professional swimmers.
Some protists have them. Algae are some protists .
All protistas are eukaryotes.
yes some are having. those are protistas.
the one that produces more oxygen is plant and animal like protists. i think this because they both produce oxygen and carbon dioxide
by their method of mobility
No; they have no mechanism by which they regulate or maintain a specific temperature. They tend toward the ambient temperature of their surroundings.
Unicellular and very small. I think also eukaryote
A thermostat is supposed to maintain a constant temperature or temperature range in an area or for a device.
temperature
They are cold blooded animals. They don't maintain their own temperature. Their temperature depends upon the temperature of the water they are in.
they maintain body temperature by sleeping during the day and hunt at night