### action | separation | removal | drainage:

Natural drainage
* fancy name for old-fashioned roadside ditches and grassy drainage channels.
* keeps some water in it at all times of the year.

### action | separation | removal | drainage:

Poor drainage
* can cause flooding and starve plant root for oxygen
  - serious problems for plants, including root rot
  - encourage the growth of soil-borne water molds that cause root rot of some crops
  - lead to fungi and diseases setting in
  - remove the oxygen available to the roots from the soil and kill the tree
* encourages root diseases and increases the hazard of winter killing.
* has a special effect on efficiency of nitrogen fertilizers.
* likely restriction on yield in that environment.

Postural drainage
* method that used gravity and body positioning to help remove secretions.
* reveals a change in color, amount or consistency of the sputum.

Proper drainage
* is an important issue when irrigating so as to reduce the occurrence of root rot.
* key factor in winter survival.

Soil drainage
* is another problem for vegetation or flowers
  - critical to plant health
  - influenced by slope, climate, soil texture and proximity to the water table
  - probably the most important factor in the longevity of an orchard
  - the rate at which water moves down through the soil
* major factor controlling nitrate concentrations in streams.
* relationship between water in the soil and topography.

Surgical drainage
* is vital to prevent asphyxiation and extension of infection to the mediastinum.
* necessary part of the management of abscesses.

Venous drainage
* follows the main arterial supply.
* is by the external pudendal veins to the greater saphenous vein
  - parallel to the arteries
* is via the pancreatic duodenal veins which end up in the portal vein
  - superior and inferior ophthalmic veins

### action | separation | removal:

Elimination
* Most elimination depends on cell interaction.
* affects habitats
  - marine habitats
* diets Environmental allergies.
* has cascade effects
* is also a major determinant of the time it takes to reach steady-state
  - analysises
  - believed to occur via biliary excretion
* is carried on by a fiephridial system resembling that of some of the annelid worms
  - nephridial systern resembling that of some of the annelid worms
  - diminished in renal insufficiency
  - discharge
  - effected through the atrophy of structures or qualities
  - murder
  - predominately in the feces, mostly as metabolites
* is primarily biliary, with excretion into the urine
  - some excretion into the urine
  - biotransformation and to lesser extent, renal elimination
  - principally renal in humans and monkeys
  - slow because metabolites remain in the blood for several days
  - the reduction to zero of the incidence of infection in a defined geographic area
* is the removal of alcohol from the body
* natural instinct of every living creature.
* occurs by urine and fecal excretion
  - in the feces via bile as glucuronide conjugates and unchanged drug
  - mainly via excretion of unmetabolized drug in the urine
  - predominantly by hepatic metabolism
  - through renal excretion
  - when the acid conjugate base plucks off a hydrogen

### action | separation | removal | elimination:

Drug elimination
* is the removal of drugs from the body.
* slows during adolescence and probably attains adult rates by late puberty.

Evacuation
* are incidents in which the person leaves the field as a result of the incident
  - withdrawals
* public protection action in a hurricane.

### action | separation | removal | evacuation:

Drain
* are capable of tubes
  - wick
  - depletion
  - emptying
  - important to aid in healing
  - located in swimming pools
* are part of sewers
  - showers
  - toilets
  - pipes
* have vents to the outside atmosphere.
* is an evacuation