Which phrase describes a situation in which all the forces are balanced? O A. A student slipping on icy ground
O B. A student leaning against a brick wall
O C. A student walking across a room
D. A student diving into a swimming pool

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.

At element makes up all organic compounds?

Which of the following isotopes has the same number of neutrons as phosphorus-31?