### system:

Passive system
* collect and transport heat by non-mechanical means.
* rel on the sun's radiation for illumination.
* use the building itself to collect and store solar heat
  - natural ability of the ecosystems to heal themselves

Pension system
* Many pension systems have different retirement ages for men or women.
* are the competence of member states.

Physical system
* All physical systems obey the laws of thermodynamics.
* Any physical system containing equal numbers of positive and negative charges is neutral
  - is by definition a quantum mechanical system
* Many physical systems behave in a similar way
  - exhibit some nonlinear behavior
  - have a limit to continuous growth
* are always deterministic
  - structures
* have moving parts.

Physiological system
* Many physiological systems show variability that appears to be irregular and random.
* are organ systems within the body.
* maintain a dynamic equilibrium.
* provide for prevention of cancerous growths.

Pneumatic system
* All pneumatic systems operate by applying a force over an area.
* are also typically less expensive to build.
* use compressible fluid, such as air, in their operation.

Pressure system
* Pressure Systems Identify major pressure systems throughout the region.
* cause the winds that make the sea rough
  - weather experienced locally

Production system
* Some production systems yield mainly animal products.
* lend themselves well to the modelling of learning and cognitive development.

Real system
* Most real systems exhibit heteroscedastic noise when viewed over a large factor domain.
* are compositions of CPUs, peripheral devices, memory, and software.
* have many different surface active agents present.

Religious system
* All religious systems attempt to give meaning to our existence.
* Many religious systems have washing of the hands incorporated in their ritual.
* Most religious systems have a cosmogeny, a story about how and why the world was created
  - tend toward the excess of machinery and the parasites of form
* are political systems of an inner nature.

Reproductive system
* are body parts
  - solid objects
  - well developed and usually hermaphroditic
* can vary much over the animal kingdom.
* change with age.
* extends into the logn joints of the legs.
* have a basic pattern within the phylum, but many variations are found.

### system:

Respiratory system
* Provides internal systems with oxygen and removes carbon dioxide.
  - organ systems
  - part of bodies
* have both a moist respiratory surface and a lot of surface area for respiration.
* is responsible for exchange of gases between the human body and the surroundings
  - the major system for excretion of carbon dioxide from the body
  - well equipped with nose hair and cilia to bring dusts back out of the system
* supplies blood cells with oxygen
  - the basis of life - oxygen to an organism

River system
* Many river systems begin in rural areas and end in urban centers.
* are dynamical networks that evolve over time, through erosion and other processes
  - inherently unstable, with an energy produced by the force of gravity
* comprise features that have enormous social and ecological significance.

Robotic system
* have wide application in modern technology and manufacturing.
* perform physical manipulations loosely based on human abilities.