### structure | barrier | fence | hedge:

Windbreak
* are barriers used to reduce and redirect wind
  - effective wherever wind or sun is reducing yields of crops or livestock
  - essential for all animals housed outdoors
  - home to wildlife, and can enhance a view or screen a home
  - important for reducing the effects of strong, persistent winds
  - most effective when oriented at right angles to prevailing winds
  - single or multiple rows of trees planted on windward field boundaries
* do just what their name implies they reduce wind movement across a field.
* have multiple purposes in crop production.
* obstruct and redirect the flow of wind.
* provide protection for people, animals, buildings, crops, and natural resources.
* reduce wind speed and alter the microclimate in sheltered areas
  - change the field environment

### structure | barrier | fence:

Hedgerow
* Some hedgerows produce milkweed seeds
* act as windbreaks and provide definition and variety to the visual landscape.
* also form a transition zone between two different habitats, such as fields and woods
  - help increase the population of beneficial insects and animals
  - yield other products such as fuelwood and fodder
* are actually rows of hedges.
* are an important component of the landscape and conservation features of the Tyne Valley
  - reservoir for deciduous trees since Ireland has so little woodland
* are full of foxgloves, primroses and other spring flowers
  - primroses, violets and wild garlic
  - important corridors for the movement of game and wildlife
  - in effect low shelterbelts, usually made up only of shrubs
  - man-made barriers generally used as field boundaries
  - narrow bands of vegetation like the ones found between farm fields
  - of particular importance, where they still exist, in areas of intensive agriculture
* can have many functions
  - help make our own spaces more wild
* consist of fodder species also.
* encourage wildlife offering winter protection and feed.
* help protect salmon in several ways.
* includes bases
  - sections
* protect crops from damaging winds by blocking and slowing air movement.
* provide wildlife habitat, like mini-wilderness areas.
* use more water but increase efficiency and profit in developing walnuts
  - water, but increase efficiency, profit in young walnuts

Stone wall
* act as heat shields to deflect flames.
* are fences.
* can act as heat shields and deflect flames.
* impose an ancient order, and man-made monuments compete with nature.

### structure | barrier | fender:

Mudguard
* are fenders.
* are part of bicycles
  - motorcycles
* help protect the child s clothing from dirt and rain water while propelling outdoors.

### structure | barrier:

Gate
* act as a way to get through fences, and are opened or closed with a right-click.
* are building blocks
  - capable of swings
  - electrodes
  - entrances
  - lift out or hinged barriers that restrain flood waters from entering a given area
* are located in apartments
  - backyards
  - gardens
  - movable sections of a wall which allow entrance into a city
  - passageways
  - symbolic of power and authority to possess the gates of hell
* are used for closings
  - lockings
  - openings
* have input.
  - hinges
  - keyholes

### structure | barrier | gate:

Tailgate
* are gates
  - part of trucks
* includes bases

Turnpike
* are expressways
  - located in atlases
  - part of roads
  - roadways
* are used for driving
  - transportation
  - turning

Turnstile
* are located in amusement parks
  - stores
  - subway stations
  - train stations
  - used at a variety of places
* are used for admission
  - counting.
  * are used at a variety of places. This includes stadiums, amusement parks, museums, and mass transit stations

Geographic barrier
* are the best stimulants of evolution.
* can restrict genetic exchange among populations even further.