### fluid | air:

Warm moist air
* comes in contact.
* meets air
  - canadian air
* meets cold air

### fluid | air:

Warmer air
* can carry more moisture than colder air
  - contain more water vapor than cooler air before becoming saturated
  - hold a lot more water than cooler air
* can hold more moisture than cooler air
* can hold more water than cooler air
  - vapor, thereby generating increased evaporation rates
* causes droplets to fall as rain.
* decreases adsorptive capacity.
* has larger moisture content
  - less pressure than cooler air
  - lower thickness than cold air
* holds more moisture, and many experts predict more and heavier rainstorms
  - so areas with warm air tend to have a lot of precipitation
  - thus the potential for heavier downpour events
* is capable of holding more moisture than cooler air
  - water vapor than cooler air is
* is less dense than cold air, so as the warm air rises the molecules spread out
* is lighter than colder air
  - cooler air and goes higher in the sky
* rises while cool air sinks which creates the environment for flowing air movement.
+ Atmospheric convection: Atmosphere
  * The most frequent is contact convection. The sun is shining on the surface. It gets warmer and warmer. This leads to origination of spontaneous rising and downward motions. This warm air has higher temperature than its neighborhood. Warmer air has lower thickness than cold air. Warm air is getting high. Through this rising motion the air element decelerates because of the fiction. This trend stops when the temperature of this element is equal to the temperature of surrounding air. Next rising caused just the inertia.
+ Weather, Causes of weather: Natural events
  * Weather happens because different parts of the Earth get different amounts of heat from the Sun. The equator gets the most heat because the Sun shines straight down on it, while the poles get the least heat because the Sun shines on it from a low angle. Warmer air is lighter than cooler air and goes higher in the sky. Water can come with the air and when it cools, the water can go from a gas to a liquid through condensation. Then the water can fall from the sky as rain or snow. After the air goes into the air, it gets colder and goes back towards the ground. Because the air lost its water before, it is dry when it comes back to the ground. As the Earth turns, air moves.

Wet air
* comes off the North Pacific Ocean.
* helps make mucus thin.

### fluid:

Cerebrospinal fluid
* clear liquid that surrounds the brain and the spinal cord.
* demonstrate lymphocytosis and elevated levels of cerebrospinal fluid protein.
* fills the syrinx
  - ventricles of the brain and the central canal of the spinal cord
* is enclosed within the meningeal layers
  - functionally continuous with the extracellular fluid bathing central neurons
  - held within membranes and bones that act like flexible skin
  - humour
  - in the sac
  - normally clear and colorless
  - obtained from the spinal area using a small needle and a syringe
* is the fluid of the nervous system
  - that bathes the brain and spinal cord
  - material that bathes the brain and is collected by a spinal tap
  - very nearly a pure sodium chloride solution

Clear fluid
* Most clear fluid has immune functions.
* Some clear fluid is produced by glands
  - salt glands
* has functions

Coelomic fluid
* containing hemoglobin is circulated by peristalic body movements.
* serves as a hydrostatic skeleton.

Excess fluid
* can be a major factor in weight gain.
* is carried away by the lymphatic system.
* make body tissues swell.
* swells the nerve tissue and membranes surrounding the brain.

Extra fluid
* Drink extra fluids to help clear the infection.
* can also create excess saliva, as well as swollen and bleeding gums.
* helps thin lung secretions so they are easier to cough up.