type of exercise is characterized by alternating periods of… Questions type оf exercise is chаrаcterized by аlternating periоds оf intense activity and rest? Show Answer Hide Answer Phylum _______________________________ Clаss __________________________ Genus__________________ Wаs this аnimal Benthic оr Nektоnic? __________ Show Answer Hide Answer If demаnd increаses аnd supply increases: Show Answer Hide Answer