### waters:

Waterway
* Many waterways receive additional pollution from sources outside of the state.
* Most waterways have bottoms
  - mud bottoms
* Most waterways have soft bottoms
* Most waterways provide municipal water
* Some waterways have regulations that prohibit certain uses, such as using power boats
  - limit boat size and use
  - possess dolphins
* are also boundaries
  - an important component of a terracing system and soil conservation plans
  - easily navigable, as there are few locks
  - fringed with dense forests
  - located in bridges
  - major means of transportation for both goods and people
  - plentiful and easily accessible for boating, fishing, kayaking or jet skiing
  - second to only highways when it comes to accidental deaths
  - well grassed areas designed to carry the discharge water flow safely downhill
* become narrow, deep channels and the flow of water is restricted
  - narrower and shallower, blocked by fallen trees, logjams, and sandbars
* carry antibiotic resistance.
* change like the tides.
* help maintain wildlife and water resources.
* often cover wide areas that encompass more than one nation.
* raging with spring runoff and melted snow can be dangerous to cross
  - from heavy snows can be difficult and dangerous to cross

### waters | waterway:

Grassed waterway
* are shallow and easy to cross.
* can nearly eliminate gully erosion.

### waters | waterway:

Rapid
* Most rapids are swift and shallow, dropping around small boulders lodged in gravel bars.
* Some rapids are more dangerous in low waters, and some are more dangerous in deeper waters
  - become easier in high water
  - contain hazardous undercut rocks
* are few and mild, and geese, eagles, deer, and many varieties of ducks are common
  - part of rivers
* are the fastest water flows in a stream
  - on any stream
  - turbulent water with a rough surface
  - where the river bed is rocky, and the river runs fast over and around the rocks
* become more numerous and hazardous in low water.
* occur along most river courses so that the rivers are of little use for transportation.
* vary greatly by river flow.

Way
* affect behavior
  - eat behavior
* encourage growth.
* facilitate growth.
* have consequences
  - different environmental consequences
  - term consequences

### weak electrolytes:

Weak acid
* All weak acids are weak conductors of electricity.
* Some weak acid is formed by rainwater.
* are weak electrolytes.
* can exhibit low pH readings just as strong acids.
* have high pK. Strong acids have low pK.
* ionize only slightly.
* remain largely in molecular form and dissociate only slightly.
* seep into the ground until they reach a zone soaked with water.

### weak electrolytes | weak acid:

Selenous acid
* is very toxic.
+ Selenous acid, Properties: Acids :: Selenium compounds
  * Selenous acid is a weak acid. It can be heated to make selenium dioxide. It is more stable than sulfurous acid. It can be crystallized as a white solid. It is a weak oxidizing agent. It reacts with bases to make selenites
  - Safety
  * Selenous acid is very toxic. Just ingesting a small amount can kill you

### weak monoprotic acid:

Dichloroacetic acid
* induces peroxisome proliferation in the livers of both rats and mice.
* is carboxylic acid
  - chemical compounds
* weak monoprotic acid.

### weapon | gun | firearm | autoloader | automatic weapon | machine gun:

Automatic
* are guns
  - weapons
* is an automatic weapon
* machine gun

Automatic rifle
* are machine guns.
* are usually selective fire and use rifle bullets from a magazine
  * Usually, an 'automatic rifle' semi-automatic rifle which fires a rifle bullet. However, automatic rifles are changed to give both semi- and fully automatic fire. Automatic rifles are usually selective fire and use rifle bullets from a magazine. This makes them different from other automatic firearms like the machine gun and submachine gun