### important industrial chemical:

Hydrofluoric acid
* can cause serious, painful burns when it contacts skin.
* can cause severe burns and inhalation of anhydrous hydrogen fluoride can be fatal
  - eye burns, with destruction or opacification of the cornea
* causes extremely severe chemical burns and is capable of dissolving bone.
* clear, colorless liquid, miscible with water, with an acrid, irritating odor.
* corrosive colorless fuming liquid or gas with a strong irritating odor.
* damages the cell contents more or less.
* etches the glass of light bulbs, etc.
* has the ability to dissolve glass and is used to etch designs on glass objects.
* highly corrosive chemical that can burn the skin and eyes on contact.
* is acid
  - also the strongest of the hydrohalic acids in acetic acid and similar solvents
  - chemical compounds
* is extremely corrosive to all tissues of the body
  - dangerous and a small splash on the skin can be fatal
  - potent and dangerous
  - hazardous and corrosive and, if accidently released, can form a vapor cloud
* is more effective at reacting with glass, though
  - hazardous than other acids due to how seriously it can burn
  - product of hydrolysis
* is used to etch glass
  - light bulbs and other glass
  - silicon dioxide and, when combined with other acids, silicon
* meets the requirements of a hazardous waste.
* reacts well with silicates and is used in etching glass
  - with glass, ceramics and some metals
+ Potassium fluoride, Properties: Potassium compounds :: Fluorine compounds
  * Potassium fluoride is a colorless crystalline solid. It rarely occurs in the ground. It dissolves easily in water. It can react with glass. Hydrofluoric acid is more effective at reacting with glass, though. It has to be stored in plastic or platinum containers.

### important industry:

Horse breeding
* are breeding.
* is an important industry
  - inexact science
* strongly traditional Tennessee pursuit.

### important integrator:

Land management
* including soil management therefore strongly affects water quantity and quality.
* is an important integrator
  - the creation of an inventory of the national territory
* provincial responsibility under Canada's constitution.
* requires scientific knowledge and an understanding of ecosystems.

### important iron source:

Atmospheric deposition
* direct nutrient load when deposited on tidal waters.
* is an important iron source
  - another source of nonpoint pollution
  - often one of the major sources of nitrogen
* is the largest source of lead found in soils
  - main source of PCBs
  - second-most prevalent source of nitrogen
* results from wet and dry inputs.
* supplies a considerable amount of plant-available sulfur.

### important livestock feed:

Soybean meal
* Most soybean meals provide proteins.
* Some soybean meals reduce excretion
  - phosphorus excretion
* are flour.
* by-product of the production of soybean oil and is high in protein.
* common protein source in horse rations, especially for young, growing horses.
* is an important livestock feed
  - another source of fat used in commercial products
  - currently the largest source of protein feed in the world
  - generally cheaper than other protein sources with similar amino acid qualities
* is the dominant protein supplement used in U.S. livestock and poultry feeds
  - main protein source in poultry and livestock feeds in most parts of the world
  - most common protein supplement used in horse rations
  - used as a supplement in feed rations for livestock
* major export product of the United States.

### important management concept:

Records management
* is an important management concept
  - in-depth study of records management programs for organizations
  - distinct from archival management
* is the science and the art of gathering and controlling information in all forms
  - systematic control of records from creation to final disposition