* Began public health and sanitation systems Romans Egyptians O Greeks O Chinese

Which of the following is a nonspecific defense against pathogens? - b cells - antibodies - t-cells - inflammation

Which of the following can be effective in preventing the onset of viral infection in humans? a) taking vitaminsb) getting vaccinatedc) taking antibioticsd) taking drugs that inhibit transcription

Which of the following is not a potential safety hazard to consider when organizing an early childhood outdoor space? a. proximity of restrooms b. nearby traffic patterns c. sun exposure d. standing water