### activity | disturbance:

Human disturbance
* Most human disturbances affect productivity.
* Some human disturbances reduce survival.
* can cause golden eagle nest site abandonment or reproductive failure.
* changes selective pressures.
* is the most common cause of colony abandonment.

Large disturbance
* Most large disturbances have thinner spots and holes where mobile observers can gather.
* hold entire galaxies together.

Magnetic storm
* Most magnetic storms are caused by activities
  - sunspot activities
* Some magnetic storms take places.
  - perturbation
  - relatively rare
* can cause damage in very long, high-voltage power transmission lines
  - disrupt or destroy some of Earth's technological infrastructure
* cause sunspots, which appear dark because they are cooler than the surrounding gas.
* circulate the atmospheric gasses.

Mechanical disturbance
* can cause the molecules in solids, liquids, and gases to vibrate.
* involves sudden water flow and vibrations.
* occur whenever a tumor compresses adjacent structures.

Natural disturbance
* Some natural disturbances affect population size
* are common and extremely important to a healthy ecosystem.
* can influence the outcome of competition.
* is predominantly fire and drought
  - fire, periodic flooding, insects, and disease

Neuromuscular disturbance
* are the most common
  - prominent
* outlasts other symptoms of exercise-induced muscle damage.

### activity | disturbance:

Sleep disturbance
* Some sleep disturbances are signs of serious physical or psychological problems
  - simply due to changes in development or because of overstimulation
* are common during pregnancy, especially in the last trimester.
* are common in depression and can be the individual's first complaint
  - people with either mania or depression
  - more common in elderly persons
  - strongly related to mental illness
  - the most common complaint of chronic pain patients
* can also occur including lethargy, drowsiness, and fatigue.
* common and complex clinical problem in older adults.
* influences gastrointestinal symptoms in women with irritable bowel syndrome.
* is an especially disturbing symptom for police officers
  - common in chronic fatigue and in fibromyalgia
  - commonplace and causes much personal distress to sufferers and their families
  - very common among elderly people

Tropical disturbance
* is an area where rain clouds are building.
* migrate cause intensification of the precipitation.

### activity | disturbance | upset:

Emotional upset
* appears to reduce the activity of compounds important to the healing process.
* can also act as a trigger.

Gastrointestinal upset
* Some gastrointestinal upsets can be rapidly fatal.
* includes the usual problems of nausea, vomiting, anorexia, diarrhea, etc.

Diversion
* changes historic patterns
* is activities
  - attacks
  - turns

### activity | diversion:

Ballet
* is art forms
  - choreography
  - dance performance
  - located in theaters
  - music
* refines balance and posture, tones muscles, and improves flexibility.
* strengthens the entire body and substantially increases flexibility in movement.
* teaches body alignment, placement and grace like no other form of dance
  - correct posture, poise and strength
* tell stories with music and dancing.

### activity | diversion | ballet:

Modern ballet
* Some modern ballets supplement the scenery with slide projections, films, and special lighting.
* is ballet