Density
* Densities apply to gross developable acreage.
* Densities are at a maximum near the mean low-water line, and decrease into the subtidal zone
  - electron density surfaces
  - higher in undisturbed gallery forests than in drier habitats
  - typically highest in alfalfa
  - can reach as many as a hundred mites per flower
  - have the same name as their distribution functions
  - show the distribution of features or values per unit area
* Densities vary according to habitat suitability, including the abundance of prey
  - considerably over the globe
* Most density affects diet breadth
  - gametophyte growth
  - depends on temperature
* Most density is divided by critical density
* Some density affects physical properties
  - productivity
* affects activities
  - both windward and leeward drift lengths and heights
  - usefulness
* also decreases with a drop in air pressure
  - tells how concentrated or crowded something is
* can be an agent of natural selection.
* characteristic property of each substance
  - matter
* compares the masses of different substances.
* comparison of matter and space.
* continues to be one of the most misunderstood properties of polyurethane foams.
* controls how close the particles are to each other when they are created
  - thick the fire is in a way, how transparent or dense the fire is
* corresponds to the overall electron density of the molecule.
* creates competition, it forces rapid height growth with minimal terminal diameter growth.
* declines during winter.
* decreases closer to the hypodermal tissue because of the presence of fat cells
  - with altitude
* depends on environmental factors
* depends on the mass and volume of a substance
  - of molecules and how closely they are held together
* derived quantity that is described in terms of mass and volume.
* describes how compact or concentrated something is
  - the mass of a substance per volume
* desirable trait in alpacas.
* determines if a substance sinks or floats in another substance.
* determines the pull that gravity has on a substance
  - relative bouyancy of objects or fluids
  - upwind and downwind distance snow drifts are cast
* equals mass divided by volume.
* function of mass and volume.
* fundamental physical property of matter.
* has impact
  - significant impact
* identifies the weight of the paper compared to the thickness.
* increases weight
  - with depth due to compaction and progressive cementation
* indicates how tightly packed matter is.
* is affected by gravity, and also by how many atoms there are to pack together
  - temperature and salinity
  - temperature, salinity, and pressure
* is also important in the industry that keeps the world moving, petroleum
  - related to selectivity
  - the reciprocal of the specific volume
* is an almost static property of a liquid
  - example of a value that is calculated using two measurements
  - important physical property
  - indication of kernel hardness
* is another example of a physical property
  - multivariable calculus concept used by doctors
* is based on the amounts of cholesterol triglycerides and apoproteins
  - number of lots
* is calculated by areas
  - the number of keywords divided by the size of the document
  - compactness
* is considered constant in space
  - to be a function of the concentration of one of the constituents
* is controlled by lot size, floor area, or building coverage for non-residential uses
  - the temperature and humidity of the air
  - correlated with winter rainfall
  - dependent upon temperature
* is determined by deviding the mass by the volume
  - dividing the mass of a substance by the volume occupied by that mass
  - the number of plants rooted within each quadrat
  - equal to the amount of mass per unit of volume
* is expressed as grams per milliliter for liquids and solids
  - the number of individuals per unit area
  - found by dividing mass by volume and is usually expressed in grams per cubic centimeter
* is how close together the molecules of a substance are
  - tightly each fiber is stitched together
  - independent from firmness
  - influenced by groundcover and competition, especially in autumn
  - just slightly less than Earth's
  - mass over volume, or is proportional to mass over radius cubed
  - measured by the fraction of area covered by the discs
* is measured in characters per inch of tape
  - something called specific gravity
  - more directly related to ecological conditions
* is one of the basic properties of matter
  - contributors to ultimate wall strength
  - things that makes things float
* is only a raw gauge to measure a population's disbursement across the land
  - useful when describing solids
  - presented as a multiple of the density of water
* is related to presence of woodrat nests and, in woodlands, density of California bay
  - reported in kilograms per cubic meter of seawater
  - something that makes things float
  - spacing
  - temperature dependent and different allotopes of one element possess different densities
* is the amount of mass per unit volume of a substance, or the inverse of specific volume
* is the amount of matter packed into a space
  - per unit volume, in essence it measure of compactness
  - stuff or matter in a certain space
  - average number of plants per square metre
  - bridge or connecting link between mass and volume
  - degree of opacity of an image on paper or film
  - hottest thing in urban environmentalism, the mantra of the sustainable city movement
  - intensity of mass and pressure is the intensity of force
  - light absorbing property of a material
* is the mass contained in a unit volume
  - divided by the volume
* is the mass of a given volume of a substance
  - material per unit volume
  - substance per unit of volume
* is the mass of an object divided by the volume
  - gas per unit volume
  - material contained within a given volume
  - unit volume of the substance
* is the mass per unit volume of a material
  - volume of any given substance
  - measurement of how much mass of a substance is contained in a given volume
  - num- ber of individuals per unit area
  - number of bytes that can be stored on each track
* is the number of individuals in a population in a given unit of space
  - organisms per unit area
  - percentage of a metro area s population that lives in urbanized areas
  - physical condition
  - population divided by the area
  - ratio of mass and volume
* is the ratio of mass to the volume of an item
* is the ratio of the mass to the volume of any substance
  - solid area of the trees to the total area of the windbreak
  - relationship between the mass and the volume of a substance
  - single most important factor in making embroidery look good
* is the weight divided by the volume
  - of a unit volume of insulation
* is the weight per unit size
  - volume or weight for the same amount
  - therefore A. an intensive and physical property of matter
* is therefore a measure of how tightly packed the soil particles are in any given pedon
  - scalar quantity
  - thus the link between molarity and molality
* is used for many liquids and for most solids
  - to distinguish typically between different solids or different liquids
  - weight per unit volume
* mathematical relationship between mass and volume.
* means the number of housing units per acre when used to describe residential development.
* measure of amount of mass in a given space.
* measure of how much weight there is in a certain volume
  - solid something is
  - the weight of a particular volume of a substance
* measurement of how much a given volume of something weighs
  - matter is packed into a certain volume
* number that relates th e mass of an object to the space it takes up
  - the mass of matter to the space it takes up
* physical property of all matter
  - matter that expresses a relationship of mass to volume
* prevents most weeds from growing, and some varieties have good resistance to disease.
* property used by chemists to help identify substances.
* quality that measures mass per unit volume.
* ratio of the mass of an object to the volume it occupies.
* refers to an object's mass per unit volume, or how compact it is
  - how tightly the atoms are packed together
* refers to the closeness of the pile yarns, and is an indication of both gauge and pitch
  - tufts or knots
* refers to the number of development rights originating from a parcel of land
  - individuals in a given area
  - weight for a given volume of mineral
* relative property.
* represents the amount of mass in a particular volume of a substance.
* system of describing numerically, perceived differences in brightness.
* term used to describe breast tissue that has many glands close together.
* useful physical property for identifying and classifying materials.
* variable a probability that a site is occupied by a certain type.
* varies from places
  - only by about a few percent in the ocean
* very important property of water masses since it determines whether they sink or float.