Help me. (This isn't a test) I want to pass this quick check so I can move one

Which function is performed by earths atmosphere? a. ultraviolet rays are prevented from reaching the ozone layer. b. earths temperature is raised and moderated by trapping in heat c. charged particles from the sun are prevented from reaching earth. d. magnetic charges from space are prevented from reaching earths surface.

Which formula can be used to calculate the molar mass of hydrogen peroxide

What is happening when the water inside a kettle heats up and begins to boil