Nicotine causes the blood vessels to?

The outermost layer of your teeth is called the enamel and is made of?

James is sitting at his desk on the ground floor of an office building when the entire room starts shaking. which action is most appropriate in this situation? a. standing near a window b.running out of the building c.holding up a bookshelf d.preparing for aftershocks

The concept of ensures that wounded soldiers receive treatment based on their severity of their wounds rather than their seniority