How do weathering and deposition differ?
a. weathering breaks down rocks; deposition leaves them in new places
b. weathering has to do with air; deposition has to do with plants
c. weathering only occurs in summer; deposition occurs all year-round
d. weathering can be chemical or physical; deposition is only chemical

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.

How can you use chemical equations to predict the products of the reaction you can carry out?

Aroller coaster car is traveling down a track at 22 m/s. the car has a mass of 2000 kg. what is the kinetic energy of the car? a) 22,000 j b) 968,000 j c) 484,000 j d) 44,000 j