### level:

Black level
* are deep and steady, while brightness is even
  - well calibrated, as is brightness and saturation
* refers to the degree of blackness in an image.

Blood level
* are an accurate reflection of body levels.
* drop when the drug is metabolized by the liver and removed from the body.
* increase if portal blood bypasses the liver via shunts.
* peak and decline slowly until the next injection.
* require periodic monitoring to ensure proper dosage.
* rise very rapidly, leading to a rapid induction of anaesthesia
  - when a man is infected or has a cancer

Caliber
* is the term used to describe the diameter of the bores of both rifles and handguns
  - used to describe the diameter of a bullet
* term used to indicate the diameter of a bullet in hundredths of an inch.

### level:

Cholesterol level
* Most cholesterol levels depend on levels.
* Some cholesterol levels are below mg.
* Some cholesterol levels lead to cardiovascular diseases
  - result in death
* are another example
  - high at birth and increase with age
  - much lower in vegetarians
  - of great interest to consumers
  - still too high practically in all populations
  - typically low
* can be very high during pregnancy and while nursing.
* go up at first.
* increase due to consumption of saturated fat and cholesterol
  - during pregnancy and nursing because of increased hormone levels
* is determined by testing a small sample of blood
  - in milligrams
  - measured in milligrams per deciliter of blood
* provide information about many risks.
* rise after puberty.
* seem to be normally distributed.
* tend to rise after menopause

Creatinine level
* measure of kidney function, with lower levels indicating improved function.
* vary with age, race and body size.

Cyclin level
* drop to allow continuation of meiosis.
* oscillate during the cell cycle, with a peak occurring during mitosis.

Decreased level
* are most commonly due to inadequate protein intake, malabsorption, or liver damage.
* indicate the presence of hemorrhage, anemia, iron deficiency.
* signal hypothyroidism, while high levels indicate hyperthyroidism in cats.

Educational level
* appears to be the best sociodemographic predictor of smoking behavior.
* is measured in terms of years of education.

Elevated level
* are a common precursor to bacterial gill disease
  - risk factor for coronary artery disease
  - significant in identifying cancer
* can cause undesirable algal blooms and create an imbalanced micronutrient profile
  - occur in homes where asbestos-containing materials are damaged or disturbed

Excess level
* cause nervous energy and panic attacks.
* result in mania, high blood pressure, anxiety.

Extreme
* are degrees
  - hurtful and pain is the bodies way of telling the mind that it is in an extreme state
  - occasions that reinforce trust and confidence in the normality of climate
* can affect menstrual patterns, reducing estrogen production.

### level | extreme:

Temperature extreme
* are a characteristic of most deserts
  - also harmful
* can also affect product shelf life.
* can cause physical or chemical changes to pesticide products
  - stress in host plants, increasing susceptibility
  - take a toll on a rabbit
  - vary widely in a very short period of time
* delay larval development.
* pose a problem for pets traveling by air.
* reduce animal and worker productivity.

Weather extreme
* have high economic and human costs.
* list of the nation's highest and lowest temperatures for the past seven days.
* occur somewhere all the time.
+ Punjab (Pakistan), Geography
  * The landscape is amongst the most heavily irrigated on earth and canals can be found throughout the province. Weather extremes are notable from the hot and barren south to the cool hills of the north. The foothills of the Himalayas are found in the extreme north as well.