What does ultra violet sterilize?

Would gravity not exist without weight? Why there is different type of waves? How does a barbecue transfer energy? Why does crushed ice melt faster than the same amount of icein single block? Make a hypothesis state which of three insulating materials you think will keep the inside temperature of the house higher than outside temperature for the longest period of time an explain why? How occuer heat waves? How can you charge a neutral object? What is the force that opposes or restricts motion in a fluid called? What are two actions that can remove the magnetic properties of a permanent magnet? Why don't we just use the renewable energy instead? What is the discussion of the experiment of the fall of a body through a viscous medium? What is a phasometer? What is needed for work to be done on an object? When a warm object is placed near or in contact. With a cooler object. Which type of energy will be transferred? Which means of communication was invented first? What is 90 F in Kelvin? What is the difference between atmosphere pressure and water pressure? Can an object move when its acceleration is zero? As the wavelength of a wave increases on the electromagnetic spectrum what happens to the energy of the wave? A disturbance involving the transfer of energy from place to place is called?

What does ultra violet sterilize?