### substance:

Organic material
* All organic material is carbonised.
* Many organic materials are suitable for composting
  - can react explosively, especially if a flammable mixture is produced
  - contain high levels of salts
  - provide excellent sources of nutrients
* Most organic material is grist for the mandible
  - materials cause death
* Most organic materials come from decay plants
  - contain nitrogen
* Most organic materials have bulk density
* Most organic materials have low levels
  - nitrogen levels
* Most organic materials have lower bulk density
* Most organic materials use in biosynthesis
  - metabolism
* Some organic materials are compounds.
* Some organic materials are produced by dead plants
  - prone to degrade rapidly, giving rise to putrid odors
* Some organic materials come from erosion
  - soil erosion
  - conduct electricity
* are attractive for flat panel displays for computers and portable devices
  - biodegradable
  - biotic
  - the main stabilizers of soil aggregates
  - useful in the summer to keep the fruit clean in non-trellised plantings
* can be excellent sources of nutrients
  - react explosively with liquid oxygen
  - the breakdown of living things, such as trees and animals
* comprises substantial fraction of the fine aerosol mass.
* decompose more efficiently if adequate oxygen, moisture, and nitrogen are present.
* degrade after exposure to water.
* delay the sun's penetration thereby keeping the soil cooler.
* does a number of good things for the soil.
* enters the soil as leaf litter, dead grasses and roots, animal wastes, and so on.
* expand and contract as ambient moisture levels rise and fall.
* helps retain moisture and nutrients needed for plant growth.
* holds water in the soil.
* includes vitamin residue, food and bird droppings.
* is anything that started out as a plant or animal
  - used to be alive, for example wood, bone and leather
  - decomposed by microorganisms like bacterial, fungi, algae and earthworms
  - destroyed in the lymph nodes by macrophages and antibodies
  - fed upon by aerobic bacteria which require oxygen
  - introduced by adding peat moss
  - known to be an excellent absorber of UV radiation
  - lost from soil through burning
  - made up of protein
  - matter that either is or once was a part of a living plant or animal
  - susceptible to decay but with appropriate conditions can become fossilised
* make up approximately two-thirds of the waste stream.
* makes up one-third of all household waste in Vancouver
* means anything made up of carbon, hydrogen, nitrogen, and oxygen
  - four elements carbon, hydrogen, nitrogen, and oxygen
* plays an important role in making the soil nutrients available to the roots.
* provides food for organisms in the form of carbon and nitrogen.
* release nitrogen for plant uptake over an extended period.
* used as a mulch can improve soil structure and tilth.

Organic substance
* Most organic substances contain nitrogen.
* Most organic substances have properties
  - unique properties
* Some organic substances are secreted by worms
  - the natural chemical properties or components of the food
  - compose of carbohydrates
* containing nitrogen are widespread throughout the world.
* need for growth.

Osseous tissue
* forms the rigid part of the bone organs that make up the skeletal system
  - variety of bones that make up the skeletal system
* provides levers for muscles and allows for mineral storage.

Other material
* contain atoms
  - dust
* have conductivity.
* have lower conductivity
  - thermal conductivity
  - magnetic properties
  - structures
* transfer charge
  - electric charge

Other substance
* contain amounts.
* have effects
  - powerful effects
  - normal growth

Oxidizing material
* Some oxidizing materials are also incompatible with non-combustible materials.
* can cause a reaction.