The main characteristics used in naming terrestrial biomes are??

Please check this site out. I'm sure you'll figure out these main characteristics.

http://www.factmonster.com/ipka/A0769052.html

4. Cigarette smoke has been found to have the following effects on the respiratory system.
1. There is destruction of many of the cilia that line parts of the respiratory tract.
2. There is a thickening of the walls of the bronchioles, thus reducing the interior diameter of the tubes.
3. There is a rupturing of the walls of some of the alveoli.
Refer to each of the effects listed above and indicate how the normal functioning of the respiratory tract is altered by smoking tobacco

The characteristics that are used to identify terrestrial biomes are the average temperature and the average precipitation?

To answer the first question about the main characteristics used in naming terrestrial biomes, I would suggest visiting the website you provided (http://www.factmonster.com/ipka/A0769052.html). This website likely has the information you are looking for. Look for sections that discuss the different types of terrestrial biomes and their defining characteristics. Some common characteristics used to name terrestrial biomes include climate, vegetation types, and dominant animal species.

Now, moving on to the second question about the effects of cigarette smoke on the respiratory system, let's break down each effect and discuss how it alters the normal functioning of the respiratory tract:

1. Destruction of cilia: Cilia are hair-like structures that line the respiratory tract and help in moving mucus and foreign particles out of the lungs. When cigarette smoke destroys the cilia, their ability to clear mucus and foreign particles is compromised. This can lead to congestion, increased susceptibility to respiratory infections, and difficulty in clearing lungs of irritants.

2. Thickening of bronchiole walls: The bronchioles are small airways in the lungs that connect the larger bronchi to the alveoli. When the walls of the bronchioles thicken due to smoking, it reduces the interior diameter of the tubes. This restricts the airflow and makes it harder for air to pass through, resulting in shortness of breath and reduced lung function.

3. Rupturing of alveoli walls: Alveoli are tiny air sacs in the lungs responsible for oxygen exchange. When the walls of the alveoli rupture due to smoking, it reduces the surface area available for oxygen exchange. This impairs the lungs' ability to take in oxygen and release carbon dioxide efficiently, leading to decreased lung function and oxygenation of the blood.

Overall, these effects of smoking tobacco alter the normal functioning of the respiratory tract by impairing the clearance of mucus and foreign particles, reducing airflow, and diminishing the efficiency of oxygen exchange in the lungs.