Turbulent flow
* are chaotic and very difficult to model correctly
  - common in technology
* can keep fragments in suspension longer than laminar flow.
* have their limits.
* is an example of a chaotic, nonlinear function
  - caused by channel topography and friction
  - chaotic with instantaneous changes in both particle direction and velocity
  - characterised by random fluctuations of speed and direction
  - composed of coherent patches of swirling fluid called eddies
  - random and chaotic
* lead to higher profile drag coefficients on streamlined bodies than laminar flows.
* occurs at higher velocities and depths.

Teenage girl
* Many teenage girls have inadequate iron intakes, especially after they begin menstruating
  - learn to diet by watching their mothers
  - marry and have babies before they are ready
* Most teenage girls are close in age to their first sexual partner, whom they know fairly well.
* Some teenage girls are more likely to smoke than others
  - get pregnant because they really want to
  - give birth to babies as a way to prove their womanhood
* appear to be at particular risk of becoming smokers.
* are at especially high risk of having low vitamin and mineral intakes
  - risk, as are minority youth
* are especially at risk because they lose iron during their period
  - susceptible to scoliosis
  - more prone to low self-esteem than boys
  - most vulnerable to the disease, some contracting the deadly virus from older men
  - now more likely than adolescent boys to smoke
  - particularly vulnerable to low levels of iron
* drink less milk than boys.
* get naked and pose nude.

Tracking
* also helps a dog learn to discriminate between the varying scents of individuals
  - provides scientists with information about manatee social behavior
* complex process that takes time to learn and years to master.
* development of a dog's natural abilities and instincts.
* dying art, the kind that is often replaced with new technology.
* form of social control.
* involves teaching the dog to follow a human scent
  - the dog's following a path which a person has previously walked
  - using the five senses plus common sense to follow a trail through the jungle
* is an early warning system that ultimately can help prevent the spread of asthma.
* is another highly important aspect of the Internet
  - sport open to all dogs
  - by birth date and type of immunization
* is more than merely identifying and following footprints
  - numbers and geography
  - particularly important in learning to read
* is the ability to move the eyes smoothly and accurately along a line of print
  - assignment to different courses of instruction
  - continuous reporting of a satellite's or space probe's position in space
  - fine art of laying out phat beatz, rhythmz, and soundz
  - management of occurrence data
  - way in which one sees and is seen by the image
* major contributor to clique formation.
* means it helps the laser follow any eye movements
  - that the vision system observes and follows the users motion
* particular form of grouping.
* program to address the needs of students deficient in one or two skills areas.
* refers to how well the drum brain senses each pad hit.
* refers to the space between the letters
  - way that a program tracks referred sales, leads or clicks
* science and has been since the beginning of hunting.
* sport that almost any dog and handler can enjoy
  - the dog controls the pace
* type of ability grouping.