### rate:

Germination rate
* are way down on tomatoes, squash, and beans.
* increase after passage through a black bear's digestive tract.

### rate:

Growth rate
* All growth rates reflect income before adjustment for inflation.
* are dependent on season, age, water and ambient air temperatures, and flow rates
  - determined by water temperature and the amount of available food
  - faster for populations of underdeveloped nations
  - highly variable in children
  - measured in terms of how much a child grows within a specified period of time
* are, in general, negatively affected by turbulence.
* bears an inverse relationship to number of rings per inch.
* can also be dependent on the general conditions in which it is grown.
* decelerates in the second year of life, as do caloric requirements.
* declines rapidly with increasing age and is similar in males and females.
* depends on temperature
  - upon factors such as moisture, light, nutrients, space, and insect infestation
* is affected by soil productivity and fertility levels
  - controlled mainly by the amount of rainfall, plant size, and soil type
  - dependent on temperatures and food supply available
  - greatest during the first two years of life and during adolescence
  - higher in developing countries
  - measured as growth occurring in the first five summers of life
  - partly a reflection of environmental conditions, and partly genetics
* is the change in cell number or mass per unit time
  - consensus long-term earnings growth rate
* reduce with age.
* represents the benefits accrued by the fish from living in one or another habitat.
* seems to be dependent on the amount of food available for ingestion.
* slow down as alligators become older.
* varies with factors in the environment
  - location, and is dependent upon temperature and food supply
* vary over time, with least growth occurring in winter as air and sea temperatures fall
  - with age, season and nutrition

### rate:

Heart rate
* are generally lower in the morning.
* can be a reliable indicator as to the overall health and fitness of the body
  - useful tool in individualizing and optimizing exercise regimens
  - increase or decrease
* continues to rise slowly thereafter.
* is affected by even the most minor emotional distress
  - an excellent indicator of work performed by the body
  - determined by how hard the skeletal muscles contract
  - increased, as are blood volume and blood pressure
  - less at any given work rate
* is measured in beats per minute
  - through a sensor on a clip attached to the rider's earlobe
  - nothing more than the number of times the heart contracts per minute
  - only a loose relative guide to recovery at altitude
  - reduced, vasodilation occurs, and blood pressure falls
  - unchanged by halothane
* modulates the slow enhancement of contraction due to sudden left ventricular dilation.
* quantitative measure of heart's work.
* remains relatively constant without significant bradycardia.
* slow, sometimes becoming irregular.
  * The average bpm for a man or women who does not exercise is 70 bpm. Heart rate varies between people because of fitness, age and genetics.
* term used to describe the frequency of the cardiac cycle.
* trained athletes know that if the resting heart rate is elevated something is wrong.
* varies between people because of fitness , age and genetics
* vital sign

### rate | heart rate:

Radial pulse
* heart rate
* is felt with the first three fingers, the index, middle and ring fingers.

Hertz
* are rates.
* claims to be the world's largest car rental company.
* produces radio waves.
* refers to the pitch of the sound.

Illiteracy rate
* remain very high in many Arab countries.
* vary from region to region.