Occurrence
* are presence.
* become facts.
* cause damage.
* depend on presence
  - weather
* have causes
* increase likelihood.
* indicate potential
* influence designs.
* is an event
* lead to hypotheses.
* receive attention
  - great attention
* take places.

### occurrence:

Accompaniment
* are happening
  - parts
* is an occurrence
* literally means to walk with or alongside people.

Allopatry
* is an occurrence
* means 'different land'.
+ Speciation, Geographical isolation: Evolution
  * Another term for geographic speciation is 'allopatric' speciation. Allopatry means 'different land'.

Avulsion
* are almost a contraindication for replant
  - separation
  - the loss of a tooth through frontal impact
* means a tearing away or separation.
* occurs when the slope of a channel decreases and the sediment build-up increases.
* refers to a fracture of intrinsic etiology, generally caused by muscular contraction.
* results in hypoxia and eventual necrosis of the pulp.
* usually occur as a downstream to upstream process via head cutting erosion.

### occurrence:

Convergence
- joining
  - physical events
  - serieses
* occurs when unrelated taxa evolve similar morphologies or behaviors.
+ Outflow (meteorology): Meteorology
  * Convergence occurs along the leading edge of the downdraft. Convergence of dust, aerosols, and bugs at the leading edge will lead to a higher clear air signature. The signature of the leading edge is also influenced by the density change between the cold air from the downdraft and the warm environmental air. This density boundary will increase the number of echo returns from the leading edge. Clouds, hydrometeors and new thunderstorms can also develop along the outflow's leading edge. This makes it possible to locate the outflow boundary when using precipitation mode.

### occurrence | convergence:

Digital convergence
* is the key to massive distribution and o interactivity.
* means more than television sets and personal computers sharing features
  - sameness in distribution
* powerful player in the automation industry and the world.

Deceleration
* are decreases in the fetal heart rate.
  - negative acceleration and has a negative value to indicate direction
  - rates
  - speed
  - the biggest killer in skiing
* is the decrease of speed or velocity over time
  - opposite of acceleration
+ Acceleration, Deceleration: Basic physics ideas :: Mechanics
  * Deceleration is the opposite of acceleration. This means that something slows down instead of speeding up. For example, when a car brakes, it is decelerating.

Decrease
* glutamate transport by the brain and spinal cord in amyotrophic lateral sclerosis.
* is amounts
  - processes
* occur in bone density, lean body mass, muscular strength, and hematopoiesis.
* sleep latency, increases the duration of sleep, and decreases the number of awakenings.

### occurrence | decrease | easing:

Decompression
* Reverses the procedure used to compress an image.
* are easing.
* consists of a linear interpolation between sample points.
* is simply the control of antagonisms by power.
* is the permanent control of both antagonists by the ruling class
  - treatment of choice
* period following a major life change.

### occurrence | decrease | easing | decompression:

Core decompression
* involves drilling holes in the femoral neck in order to get it to heal faster
  - removing portion of the bone in the head of the femur
* is contraindicated by the stage of the disease.

Decompression melting
* creates the ocean crust at mid-ocean ridges.
* involves the upward movement of Earth's mostly-solid mantle.
* occurs because of a decrease in pressure.