How is protozoa useful to humans?

What does 108 fluid ounces equal? What does the name Jenia mean? What is the chemical formula of the diamond? What is a weather system also called depression that brings strong winds thick clouds and rain or snow? Which system do chemicals from glands speed up slow down of turn off various tissues and organs? What is geological melt? The equator is an imaginary circle drawn around the earth that divides it into northern and southern hemispheres What are the imaginary lines called that are parallel to the equator? What category of organic molecules does OH belong to? Why do travelers crossing the international date line change their? Why is Barcelona important? Does putting a magnet in the water for 60 minutes make the magnet lose its magnetism? Did you evolve from monkeys or come from Mars? Organisms that ferment have a greatly increased rate of glycolysis compared to those that do not ferment Why? What is Ground-state electron configuration for N3-? How long have stoves been around? Which line of longitude shows 12.00 midnight? How many seasons do prairies have? What gas law is applied in spraycan? Is the skeletal system used in baseball? Can I use mineral oil in bath water?