### beginning | cause | factor:

Environmental factor
* All environmental factors are in a constant state of change.
* Most environmental factors affect ages
  - blood pressure
  - habitats
  - mammals
  - regions
  - weight
  - cause variation
  - contribute to death
* Most environmental factors influence human health
  - phytoplankton growth
* Most environmental factors limit crop productivity
  - plant productivity
* Some environmental factors affect ability
  - actions
  - bats
  - breeds
  - deep sea life
  - earthworm breeds
  - embryo development
  - kestrels
  - mangrove productivity
  - mosquitoes
  - plant growth
  - reproduction
  - sensation
  - sheep
  - synthesis
  - thermal sensation
  - time
  - alter height
  - cause mortality
* Some environmental factors contribute to autism
  - flavor
  - numbers
* Some environmental factors determine pathogen survival
* Some environmental factors influence gene expression
  - photosynthetic productivity
  - lead to death
* act in combination to determine overall cactus growth.
* activate genes and then some kind of specialization starts to occur.
  - compositions
  - qualitative compositions
* appear to affect the severity of clinical signs.
* are called limiting factors
  - common sources of a plant disorder
  - important determinants of fluctuations
  - just one cause of infertility
  - significant and influence dyslipidemia, hypertension, and obesity
  - the primary factors in determining trail impacts
* become critically important during later stages of brain maturation.
* can also affect the health of nails
  - alter an animal's growth performance
  - contribute to the rate, or extent, of hair loss
  - interact with genetic information to supply even more variation
  - alter the alkaloid composition and concentration
  - cause a species to adapt
  - decrease the microbial population and therefore increase thatch
* can have drastic effects
  - play a role such as exercise and sudden impacting pressure to the abdomen
  - put youngsters at risk for pneumonia
  - risk most prominently in industries experiencing rapid change
* determine presence.
* have a great influence on plant placement and choice
  - consequences
  - interactive effects
* include presence
  - temperature
* influence a number of plant physiological processes uniquely
  - clutch size
* influence the habitat of organisms
  - rate of nerve cell creation
* interact and influence neural mechanisms.
* leading to the highest level of infective larvae occur during summer and fall.
* modify many behaviors.
* play a big part in atopic dermatitis
  - critical role in triggering lupus flares
  - huge role in the survival of the penguins in any given location
  - role in multifactorial inheritance
* play an important role in allergic disorders
  - altering the composition of satellite surfaces
  - the severity of inflammation as well
* threaten survival.

Evolutionary factor
* Some evolutionary factors drive variation.
* are interwoven with our individual and cultural life-styles.

External factor
* Many external factors influence a teen's ability to stick to sexual limits
  - play a huge role in the supply and demand of farm products
* can also affect bladder control.
* influence growth
  - plant growth

Extrinsic factor
* are factors that originate outside the patient.
* can involve certain occupational or dietary factors
  - result in negative feedback
* relate to the channel gradient and channel roughness.

Financial factor
* are a major barrier to receiving quality health care in the United States.
* can also influence decision making.

Fundamental factor
* Some fundamental factors affect reproduction.
* affect characteristics.