Age-related changes in the respiratory system may cause 1. decrease in vital capacity of as much as 35% by age 70 due to decreased tissue elasticity. 2. an increased incidence of pneumonia and bronchitis because of decreased alveolar macrophage activity and ciliary action in the respiratory tract. 3. an increase in tidal volume due to damage to alveoli and decreased surfactant production.

One way in which the european union encourages trade among countries is through the use of

“dear sir: it is with great reluctance, i trouble you on a subject, which does not fall within your province; but it is a subject that occasions me more distress, than i have felt, since the commencement of the war; and which loudly demands the most zealous exertions of every person of weight and authority, who is interested in the success of our affairs. i mean the present dreadful situation of the army for want of provisions, and the miserable prospects before us, with respect to futurity. it is more alarming than you will probably conceive, for, to form a just idea, it were necessary to be on the spot. for some days past, there has been little less, than a famine in camp. a part of the army has been a week, without any kind of flesh, and the rest for three or four days. naked and starving as they are, we cannot enough admire the incomparable patience and fidelity of the soldiery, that they have not been ere this excited by their sufferings, to a general mutiny or dispersion. strong symptoms, however, discontent have appeared in particular instances; and nothing but the most acitive efforts every where can long avert so shocking a catastrophe.” what’s the central idea?

Which common characteristic of renaissance buildings does this image show