22) moves using an undulating membrane connected to a flagellum

The answer is “Trypanosoma”. The word “Trypanosoma” comes from the Greek words trypanon and soma, which means auger and body, or auger body. A Trypanosoma moves through an undulating membrane connected to a flagellum. Trypanosoma comes from a genus of kinetoplastids, it is known to be a monophyletic cluster of single-celled parasitic flagellate protozoa. 

the water is warmed up by the sun and then it evaporates into the atmosphere. the sunlight warms the water by its heat. water is then cooled down and condensation takes place. the water then finally returns back to the earth by the process of precipitation in the form of rain or ice.

explanation: