What engulfs and destroies microbes?

Which is dangerous to breathe carbon dioxide or carbon monoxide? What do you call an atom if you move an electron in an atom from a low energy level to a higher energy level within the atom? Is the sun and earth roughly the same shape? What are the verbs of sensation? What is the name of the small repeating sub units that compose DNA? What scientist published the first periodic table and how was it arranged? Landforms in Venezuela? Is it true that the Yucatan Peninsula protudes into Pacific Ocean? What is 2000 sq meters in feet? What solute dissociates to release hydrogen ions and cause decreases in pH? How does reproduce fungi? What does dark connote? What is cabin pressurization? Is Mt Kilimanjaro known for its silly name? What amino acid looks like serotonin? What are the names of four meteor showers which may be seen in October? What are two radioactive isotopes that are used to irradiate food? Is it bad if someone licks your eyeball? What is the name on SeH4 compound? Through which continent do the equator the tropic of cancer and the tropic of Capricorn all pass?