Which is the method of purification that does not kill germs?

Which Four things used to measure time on earth are? How are elements weighed and what unit of measurement is used for weighing elements on the periodic table? What is consaturated? What does the coarse-adjustment knob on the microscope do? What Coordination could best be described as your ability to? What percent of energy is lost as heat? What is a sonometer used for? What is research approach? How old should your child be before he is sent to boarding school? What do mitochondiral and thylakoid membranes have in common? Use proficient in a sentence? Frogs are positive pressure breathers What does this mean? What of the following is not a quality of a scientific poll? What may happen with the results of an experiment if you are bias? What is an example for threshing? What is the most metallic of the elements? What are things that affect weather? Why do scientist all over the world use the same type of tools? What is Sound Quality? How long does it actually take for a folding chair to degrade?