### substance | waste | garbage:

Detritus
* Much detritus is used as a source of nutrition for animals.
* Some detrituses become fertilizer
  - provide nutrients
* is rubbish
* stimulates algae growth and pollutes the aquarium water at the same time.

Junk
* have from two to three masts or sails.
* includes trash, waste, discarded things, and salvage materials.
* is boats.
* is located in attics
  - beds
  - boxs
  - cellars
  - desks
  - drawers
  - garages
  - mail
  - purses
  - television

### substance | waste | garbage | junk:

Junk mail
* is located in desks
  - mail boxs
* menace to all people with e-mail accounts.
* third class

Space junk
* is located in orbits
  - skies
  - space
* poses a continuous hazard to both operational satellites and manned space missions.

Plastic garbage
* is known to kill as many as a million sea creatures a year.
* kill one milion of sea birds a year.

Rubble
* builds on the surface, giving the appearance of solid land.
* forms a very important part of coral reef ecosystems.
* is rubbish
* provides shelter and habitat for numerous families of fish and invertebrates.

Green waste
* are branches, shrubs, and lawn.
* consists of most organic yard materials.
* is almost all organic landscape waste materials
  - mulched vegetation and adds oxygen to the mixture, an essential for the worms
  - waste that can be recycled
* large part of the problem, since many invasive plants can propagate asexually.
* makes up more than half of the biodegradable waste.

### substance | waste:

Hazardous waste
* Some hazardous waste creates emergency situations.
* Some hazardous waste creates hazardous emergency situations
  - is recycled into usable products
* are a subset of solid wastes
  - dangerous chemicals
  - difficult to detect
  - unusable or unwanted hazardous materials
* can also be corrosive.
* can be a liquid, solid or sludge that by-product of a manufacturing process
  - either liquid, solid or gas
  - liquids, solids, or sludges
* can cause cancer and nerve damage and pollute drinking water supplies
  - injury or illness to the public, utility employees and wildlife
  - kill the bacteria that degrades the waste
  - leak into water supplies or cause air pollution, or both
* comes from a wide variety of sources, and from both present and past activities
  - in many forms
* costs about twenty times more to dispose of than solid waste.
* generated from nuclear power plants pollutes our land, air, and water.
* includes materials such as paints, poisons, and corrosives.
* is another area where government policies discourage recycling
  - any hazardous substance that is unwanted or no longer serves a purpose
  - categorized into two types
  - expensive to manage and poses threats to the environment
  - minimized when organic solvents are disposed of in a waste collection carboy
  - packaged in drums and stored awaiting treatment and disposal
  - sited above ground or in specially constructed dikes or trenches
  - the business of the commercial hazardous waste management industry
  - unusable hazardous material that results from the activities of human society
* made up of liquids containing oil and water are very common.
* pose a danger to humans or other living organisms
  - risk to humans, animals and the environment
  - real threats to people and the environment
* require special disposal.
* result when the mixing vessels, let-down tanks, and lines are cleaned.
* ubiquitous problem, affecting both developed and developing countries.

Ignitable waste
* are solids, liquids or compressed gases that burn readily.
* can catch fire spontaneously or burn easily
  - create fires under certain conditions