Which of the following solutions is considered to be isotonic?

________ Florence Nightingale is considered the founder of modern nursing

Indicate whether the statement is true or false

For caries to be imaged on a radiograph, approximately what percentage of calcium and phosphorus of the tooth structure must be lost?

a. 20–30 percent b. 30–40 percent c. 40–50 percent d. 50–60 percent