Which of the following statement(s) is/are true about fever? Higher body temperatures induced by the fever decrease the activity of the pathogen's enzymes. . Fevers have defensive purposes for the body because the heat can destroy causative pathogens. Higher body temperatures induced by the fever decrease the activity of the affected organism's enzymes and protective cells. Higher body temperatures increase the availability of iron, which allows the causative pathogen to further proliferate. Higher body temperatures induced by the fever increase the activity of the affected organism's enzymes and protective cells..