World Bank (WB) is an international financial institution that caters loans to the countries that developing or in progress. Based on the World Bank, the requirement to be in the "developing nation" category is that a country must have a low- or middle - income.
Answer:
Normal
Explanation:
Natural reaction of the human body
With the invention of the stethoscope, physicians were able to listen to the various sounds made by the heart and lungs. And began to be able to identify if patients had any diseases or ailments.