Describe a medical advance that has led to a decrease in the spread of communicable diseases.

Outdoor and indoor equipment must include a. only toys that are soft. b. equipment that is age-appropriate and developmentally appropriate. c. areas that allow children to play together. d. high toys that allow children to practice gross motor skills.

Which finger should not be used when measuring heart rate?

Aresearcher lyses a cell that contains nucleic acid molecules and capsomeres of tobacco mosaic virus (tmv). the cell contents are left in a covered test tube overnight. the next day this mixture is sprayed on tobacco plants. we expect that the plants would ) develop some but not all of the symptoms of the tmv infectionb) develop the typical symptoms of tmv infectionc) not show any disease symptomsd) become infected, but the sap from these plants would be unable to infect other plants