### dimensionless number:

Specific gravity
* Most specific gravity causes water.
* dimensionless number.
* has no unit name, but density does
* is about the weight of the fluid
  - associated with antibody level in colostrum
  - extremely temperature dependent
  - higher after exercise and at night
  - highly related to the incidence of breaks and cracks
* is measured by the relative comparison weight of water
  - in wet cell batteries to determine A. level of water
  - using a hydrometer
  - with a hydrometer
  - related to density
  - simply the relative weight of a mineral compared to an equal volume of water
  - the density of a material divided by the density of water
* is the density of a substance compared to the density of water
  - difference in mass between water and any other object
* is the ratio of a substance's density to that of water at the same temperature
  - density of a substance compared to that of water
  - the densities of two substances
* is the ratio of the density of a material compared to the density of water
  - of a material to the density of water
  - of a mineral compared to the density of water
* is the ratio of the mass of a liquid to the mass of an equal volume of pure water
  - of a substance to the mass of an equal volume of water
  - weight of an object to the weight of an equal volume of water
* is the weight of a liquid compared with an equal volume of water
  - an object divided by the weight of the same volume of water
  - the specimen compared to the weight of an equal volume of water
  - used to measure the salinity of seawater as compared to distilled water
* means how much more than water does the slip weigh.
* measure of the density of a material
  - sugars taken before and after fermentation
  - urine concentration
* measures how much water a mineral sample displaces.
* plays an important part in all calculations involving liquid.
* reflects material weight.
* relates to the density of the wood.
* useful concept when one is comparing materials.

Dimorphism
* Most dimorphism has types.
* Some dimorphism exists between males and females.
* provides opportunity.

### dimorphism:

Nuclear dimorphism
* Most nuclear dimorphism has types.
* is found in paramecium.

### dining rooms:

Dining room
* are dining rooms.
* are located in homes
  - mansions
  - restaurants
  - part of dwellings
* are used for eating
  - eats
  - family meals
* have tables.

Diploid
* Some diploids are extremely resistant to psyllids.
* are organisms.
* is an organism
* produce abundant viable seed whereas triploids are sexually sterile
  - haploid spores by meiosis, a set of two special divisions of the cell nucleus
* stop or slow growth in winter and most available energy is diverted to gametogenesis.
* undergo meiosis and sporulation when starved.

Diploid organism
* Most diploid organisms are heterozygous since they get one copy of their genome from each parents.
* carry two copies of each gene, one derived from each parent.
* contain two copies of each gene.
* have a pair of sex chromosomes
  - two alleles for each trait

### diploids:

Double flower
* Most double flowers are diploids.
* occur when the nectaries extend and become flattened, looking like sepals.
* resemble hollyhocks.