stratagies and tactics developed at an incident scene must be based on the foundation that ? applies not only to citizens but also to fire fighters

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?

Which of these pieces of safety equipment should be worn when operating a chainsaw

Is tea good for you? if so what type of tea is good for you? and how much should i drink before it is a threat to my health?