### formation | valley | ravine:

Canyon
* Many canyons are made by rivers and earthquakes.
* Some canyons are very famous, such as the Grand Canyon or the Snake River Canyon
  - attract eagles
* also provide a refuge for juveniles of commercially important fish and crabs.
* are another formation in the desert
  - dark places
  - deep valleys carved by flowing water
  - ravines
  - subject to an effect called the diurnal wind
* form, crystals form, stalactites form and so on.
* is located in Canyon Country , California
  - the deepest gorge in North America
* live oak seedlings do best in moist soil covered with leaf letter under an overstory canopy.
* live oak series is common on very steep rocky slopes
  - occurs on steep rocky slopes
  - oaks can also grow on many types of soils
* often form in areas of limestone rock.
* provide habitat for a variety of wildife.
* surrounded by houses are common places for a small herd of deer.
+ Wadi: Geography
  * A 'Wadi' is usually a valley, sometimes the bed of a river. The river that is part of the wadi only has water after heavy rain. Staying in a wadi can be a danger to life. This is because the water in a wadi can rise very quickly. Canyon is another name for it, used in other countries.
  * A 'canyon' is a big crack in the ground, or a  very deep valley. Many canyons are made by rivers and earthquakes. They can be big, like the Grand Canyon, or small.

### formation | valley | ravine | canyon:

Slot canyon
* are deep narrow cuts in sandstone plateaus
  - very narrow canyons, often with smooth walls
* form when erosion occurs in sandstone and other types of hard rock.

Submarine canyon
* are the site of spreading centers.
* occur A. at the part of an ocean basin nearest the poles.

### formation | valley:

Silicon valley
* Silicon Valley is acknowledged as the world capital of high technology firms
  - also one of the world's leading centers for medical treatment and research
  - an engine that runs on brain power
  - close to the ocean, hills, mountains, bays, and even the wine country
  - famous for semiconductors, Internet start-ups and networking equipment
  - regarded as the worldwide center of advanced digital network technology
* Silicon Valley is the birthplace of high technology entrepreneurship
  - center of semiconductor development world-wide
  - world's leader in innovation and advanced technology research
  - to the United States what the United States is to the rest of the world
  - meritocracy, where people get ahead based on the power of their ideas
  - remains the global capital of technology

Water table
* Most water tables are near land surfaces
* are higher beneath hills and slope down to feed streams and lakes.
  - the below- ground levels that are completely saturated with water
* fluctuate with seasonal rainfall and drought.
* is the level in the geologic formation below which all voids or cracks are saturated.
* means that surface in a groundwater body at which the water pressure is atmospheric.
* rises during the winter and falls during the summer.

Formulation
* Some formulations contain pyrethrins, which kills insects on contact.
* are compounds.
* is the method of presentation of the forms of our thoughts.

### formulation:

Herbal formulation
* improves lactate metabolism during recovery.
* work in a subtle manner that is harmonious with the body s healing processes.

Pesticide formulation
* Most pesticide formulations contain at least a small percentage of adjuvants.
* Some pesticide formulations are more hazardous to people than others.
* is as much an art as a science.