Which of the following statements is true about pollution? a: ozone pollution can come from aerosol products. b: the larger the particle, the deeper it can embed in lungs. c: the smaller the particle, the deeper it can embed in lungs. d: all of the above

People who utilizes the progression principle will ensure their exercise program increases in frequency, intensity, time, and type. the changes need to happen gradually in order to ensure they make gains in their fitness program. a person who doesn't utilize the progression principle can still gain health benefits from exercising, but will not continue to improve in cardiovascular fitness.