### exchange:

Gaseous exchange
* Some gaseous exchanges occur at levels.
* Some gaseous exchanges occur in alveoluses
  - lung alveoluses
* are effected, since the kernel, itself a living body, continues to thrive.
* is also necessary for photosynthesis
  - limited only by blood flow and surface area
* occurs through both the lungs and the skin
  - the general body surface
* relies on simple diffusion.

Gift exchange
* is an integral part of Japanese culture.
* time-honored, popular tradition in Japan.

Home exchange
* concept right for our time making maximum use of existing resources.
* is an agreement between two partners on equal terms.
* mutual exchange of homes or holiday homes at the same time.
* trust building process.

Needle exchange
* are essential to stop the spread of disease through dirty needles.
* can in fact become a vehicle in helping people seek drug treatment.
* is, first and foremost, a method of disease prevention.
* legitimize failure, shackling human potential and promoting hopelessness.
* reduce the spread of infection, addressing the primary risk to women and babies.

Plasma exchange
* can lower viscosity in hours, whereas most chemotherapy requires days.
* is accomplished with a medical device called a blood cell separator.

Respiratory exchange
* Some respiratory exchanges occur in gills.
* occurs through the body surface.

Stock exchange
* act as auction houses.
* are exchanges
  - office buildings
  - stores
* is an exchange

### exchange:

Stock market
* Stock Markets Watch the world stock market indicies.
* allow people to use their savings to buy stocks.
* are cyclical in nature
  - exchanges for the buying and selling of equities, or shares, in corporations
  - important to nearly everyone
  - more than thermometers
  - now a central source of capital
  - open on business days around the clock, around the world
  - part of economy
* are, the other joke goes, the country's only legal form of gambling.
* follow quarterly and annual earnings.
* form of legalized gambling.
* go up while the economy is still in recession.
* have virtually nothing to do with real investment by real businesses.
* indices Many investors like to keep track of how companies in general are performing.
* is an exchange
* leading economic indicator.
* rely on the infrastructure of banks and the payments system.
* reports Reports on the daily fluctuations of the stock markets.
* reward companies that take the long view.
* rise and fall based on long-term knowledge of corporate success
  - fall, but individual stocks follow the success of the underlying business
* seem to go up and down on perception rather than reality.
* show remarkably little respect for people or their reputations.
* succumb to worries over profits and economic growth.
* tend to move in cycles, with periods when prices rise and others when they fall.

Switchboard
* are devices.
  - on-line Internet directory
  - online telephone book, for nationwide residential and business numbers
* is the most-searched online service for finding people
  - site to use when looking for a person or a company
* national phone directory of individuals and businesses.
* people and business directory.
* site which compiles phone numbers from across the country.

Telephone exchange
* are geographic boundaries that define customer's local calling area.
* is work

Tradeoff
* are an important part of engineering security
  - grist for the mill of economics
  - inherent in the process of gathering evidence for health technology assessments
* is an exchange
* promote socioeconomic goals.
* shape the evolution of many important traits, especially life histories and aging.