In the levels of organization of an organism, what does a group of cells make up?

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.

Ahypothesis must be testable and falsifiable to be considered scientific a. trueb. false

If you burn 46.6 g of hydrogen and produce 416 g of water, how much oxygen reacted