Answer:
The Willamette Valley and Columbia River Gorge is sufficiently complex that is among the most difficult places to predict the weather in the world.
Some of the variables are:
* Direction of surface airflow—usually from the west, but if it changes to be from the southwest it becomes warmer than usual. If it changes to come from the northwest, it becomes colder than normal. If high pressure builds in the western Rockies or even east of the Cascades, easterly flow through the Gorge completely blows NOAA's computer models, though our weather is usually clear and cold in winter and extra hot in summer.
* The position of the jet stream normally meanders from north to south and back over us every few days to weeks. In winter, if it is north of us it pulls in upper level systems from the south possibly bring warm moist air from the subtropics. If the jet stream moves south of us it usually attracts cold moisture-saturated Arctic air causing overcast and cooling.
* If cold air pools in the valleys, it can resist being "blown away" for several days. The colder the harder to move.
* The Coast Range and Tualatin mountains and the Cascades have subtle effects on wind direction and air moisture saturation. Those can change the temperature of the air significantly.
The bottom line is that slight differences in temperature, wind direction, and system movement can have a radical effect on our weather.
Hoods become necessary any time water temperatures drop below: 20°C/68°F.
<h3>Why is it necessary to use
Hoods any time
water temperatures drop below:
20°C/68°F?</h3>
It is important to use hood so as to adjust the cold temperature, so as to be able to gain heat.
Therefore, hood serves as a covering for the head as well as the neck which has a opening face that prevent cold.
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The descriptions have been matched to the correct diseases that test our understanding of infections that affect the lower respiratory system as follows:
- Diphtheria- Caused by Corynebacterium diphtheria which eventually results in pseudomembrane formation on the tonsils or pharynx
- Otitis Media- Most common cause is Streptococcus pneumonia and results in a sensation of fullness or pain in the ear
- Bacterial pharyngitis- Streptococcus pyogenes infection that results in a sore throat with reddened mucosa, swollen tonsils, and pus nodules
- Common cold- Caused by hundreds of viruses and results in sneezing, scratchy throat, and runny nose
- Sinusitis- Caused by a number of bacteria and results in nasal congestion, pressure above the nose or in the forehead, and headache
<h3 /><h3>What are lower respiratory tract diseases?</h3>
Lower respiratory tract diseases are diseases that affect the lower end of the respiratory tract. Some diseases that fall into this category are asthma, pneumonia, bronchitis, etc.
All of these affect the lungs and can also result in difficulty breathing, The various explanations of these diseases have been provided in detail above.
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