The host is always harmed in a parasitic interaction. a. true b. false

The answer is false, the host could either be not harmed but not helped or the host could be helped but not harmed, it dose not always have to be parasitism. :)

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.