### process | decay:

Tooth decay
* can be the result of sweets taken in between meals
  - very painful, and can make teeth unsightly
  - cause considerable pain and discomfort and eventually lead to loss of teeth
  - have serious long term effects on children's overall health
* can occur after frequent, repeated acid attacks
  - then occur after frequent acid attacks
* destruction of the tooth enamel.
* disease that has affected man for thousands of years
  - still exists in many children
* food-related disease.
* health problem that has affected humans for centuries.
* is actually an infection that begins years before the cavity appears
  - at least as old
* is caused by bacteria and sugar
  - found in the mouth and the presence of sugars
  - that normally live in the mouth
  - plaque, a sticky film of bacteria that constantly forms on the teeth
  - primarily by bacterium called streptococcus mutans
  - illnesses
  - located in mouths
  - more severe among low income and minority children
  - often the result of poor dental hygiene practices and poor diet
  - primarily the result of poor oral hygiene
  - rampant in many Asian countries
* is the disease known as caries or cavities
  - leading cause of tooth loss in young people
  - major cause of tooth loss in children
  - most chronic health concern for children
* is the most common chronic and infectious disease among children
  - disease of childhood
  - long-term disease in the United States
  - prevalent preventable chronic condition of childhood
  - number one chronic disease among children
* is the result of acids produced by bacteria found naturally in the mouth
  - many factors, including heredity and the make-up and flow of saliva
  - other degenerative changes in the body
* starts when the tooth enamel breaks down after many aced attacks.

Weight decay
* pushes the weights toward zero.
* subset of regularization methods.

Wood decay
* caused by fungi is known as dryrot, in two forms known as brown rot and white rot.
* is extremely common, but it is only occasionally the cause of tree failure
  - initiated primarily by fungi
  - the progressive deterioration of woody tissue in both living and dead trees

### process:

Degeneration
* Some degeneration causes blindness.
* Some degeneration leads to abnormalities
* Some degeneration occurs in glass lizards
  - goats
  - wild goats
* appears to begin during the microspore mitosis stage.
* causes premature aging.
* is initiated by exposure to abnormal physical, chemical, or psychological stresses
  - processes
  - thus a result of wear and tear on the spine
  - transformation
* means slow deterioration or gradual loss of function.
* microscopic change, and a process.
* physical process
* process where wear and tear causes deterioration.

### process | degeneration:

Muscular degeneration
* Some muscular degeneration occurs in goats
* is an age-related disease that affects the central vision.

### process | degeneration | obsolescence:

Technological obsolescence
* constant fear of dedicated scientists or engineers.
* occurs at a rapid rate.

Retinal degeneration
* are very difficult diseases to describe because each case is so different.
* is often diffuse , in many parts of the retina.

Democratic process
* are inevitably messy because they are free and open to all.
* can help harness powerful global forces towards health equity.