Why is the year 1966 usually referred to as the beginning of the modern era of ems?

How do the uv rays cause damage?   what exactly causes the skin to burn;   can you be more specific about this mechanism?   3. how do photosensitive medications increase a person's sensitivity to sunlight and therefore increase their risk of getting burned?     what kind of medications can increase photo-sensitivity, can you think of some examples?

Diagram the passage of food through the digestive system. label the organs involved in digestion and absorption and identify the sites where carbohydrates, proteins, and fats are digested.

Match these items. 1. the ability to evaluate information to judge whether it is true or not consequence 2. the result of a decision made or an action taken discernment