One kind of radiation not released by radioactive decay is ~a~ free protons ~b~ beta particles ~c~ gamma rays ~d~ alpha particles

Maria wants to determine which type of disinfectant kills the most bacteria. which of the following is the best way for maria to determine this? a. ask ten different companies that make disinfectants which type is best. b. put the same amount and species of bacteria on ten identical plates, and add ten different kinds of disinfectant to each plate. c. interview ten different people to determine which type of disinfectant they prefer. d. put the same amount and species of bacteria on ten identical plates, and add a different disinfectant to each plate.

What three things determine the shape and size of a puddle when water is poured out onto a surface

An atom of which element reacts with an atom of hydrogen to form a bond with the greatest degree of polarity ?