Other triggers, such as air pollution or pollen are much harder to avoid but medications can help prevent the trigger from setting off an asthma episode. Following are examples of types of triggers and some ways to deal with them. 1  Cigarette Smoke. 2  Allergens. 3  Exercise. 4  Cold air exposure or sudden temperature change. 5  Respiratory Infections and Colds. 6  Excitement / Stress. 7  Odors and Fumes.
Birch Early Origins. Buy PDF History Â». The surname Birch was first found in Lancashire at Birch, a district chapelry, in the parish of Manchester, union of Chorlton, hundred of Salford. The chapel, dedicated to St. James, is supposed to have been originally built by a member of the family of Birch.
Birch tree Facts. Birch is deciduous tree that belongs to the family Betulaceae. There are around 60 different species of birch that grow in temperate climate around the world. Birch requires well-drained soil, enough moisture and direct sunlight for the proper growth.ark of the birch can be white, grey, yellow, silver or black in color. Young trees have smooth bark. Deep ridges on the bark are characteristic for the older plants. Bark of all birch species (except Grey Birch) peels off in long horizontal strips.