### system:

Electronic system
* All electronic systems generate unwanted noise.
* Most electronic systems incorporate power supplies containing magnetic transformers.
* can also be vulnerable to tampering.
* can be either active or passive
  - vulnerable to hackers and other criminals
* tend to simply stop working.
* use electromechanical means to recieve data.
* vary widely.
* work in subways and highways.

Email system
* Most Email systems allow responses to be sent to all recipients of a message
  - email systems have Internet gateways
* are typically interoperable so they can exchange messages.
* have different capacities for determining return addresses.

Endocrine system
* ageing The endocrine system is particularly sensitive to age.
* are body parts
  - organ systems
  - part of bodies
* can use either water soluble or hydrophobic signals.
* coordinate and regulate internal communication in cellular organisms.
* has the glands most closely involved with the stress response.
* release hormones that act as chemical messengers.

### system | ethical code:

Double standard
* are ethic
  - standards
  - the currency of politics everywhere
* is ethical code

Ethical system
* All ethical systems begin with at least one axiom.
* Many ethical systems argue that behaviors are contextual.
* Some ethical systems are rules oriented.
* are an important part of the process of justifying a particular action.

Exhaust
* is believed to increase the risk for asthma attacks, lung cancer, and premature death
  - diluted to retain water in vapor form
  - gases
  - part of automobile engines
  - the waste smoke
* makes up a part of vehicle emissions.
+ Four-stroke engine: Motors
  * The 'four-stroke engine'  is an internal combustion engine. Intake means to pull in the fuel. Compression is when all of the fuel is squeezed. Exhaust is the waste smoke.

### system | exhaust:

Auto exhaust
* adds to the air pollution of many of our country's cities.
* contains various compounds that can collect in roadside plants.

Automobile exhaust
* can also put toluene into the air.
* is gases
  - mixture
  - one of the most important sources of greenhouse gases
  - pollutants
* major source of air pollution for most cities.
* primary culprit, simultaneously spewing hydrocarbons and nitrogen oxides.

Car exhaust
* contain a range of toxic substances that can have a serious impact on health.
* contributes to the thick layer of smog over many cities.
* has a variety of chemicals in it.
* is one of the main contributors to acid rain.
* kill trees, and that much is certain.

### system | exhaust:

Diesel exhaust
* can also exacerbate lung diseases such as asthma and emphysema.
* contains almost no carbon monoxide at idle
  - genotoxic compounds in both the vapor phase and the particle phase
  - many compounds
* has serious health effects that have been extensively documented.
* increases susceptibility to asthma , allergies and respiratory illness.
* is also a suspected carcinogen
  - an important source of air pollution
  - one of the largest and most hazardous sources of air pollution in California
  - produced when an engine burns diesel fuel
  - under review as a hazardous air pollutant
* known mutagen and a potential human carcinogen.
* major source of fine particles that are the most lethal
  - particles, especially in urban areas
  - particle pollution in California
* particular health concern.
* particulates apparently enhance IgE antibody production to allergens.
* poses a major threat to public health.
* potential carcinogen.
* pulmonary carcinogen in rats exposed chronically by inhalation.
* toxic air contaminant that causes lung cancer.
* virtual encyclopedia of the most toxic compounds on the planet.

Engine exhaust
* contain thousands of gaseous and particulate substances.
* contains carbon monoxide, an odorless, colorless and tasteless gas.
* produces only a small portion of the water that forms ice in persistent contrails.