### condition | wetness | humidity:

Absolute humidity
* Most absolute humidity depends on air temperature
* finds greatest application in ventilation and air-conditioning problems.
* is expressed either in grams per cubic meter, or in grams per cubic foot
  - lower than on the Sahara
* is the mass of water vapor present per unit volume of air
  - total amount of water vapor present in a given volume of air
* mass to volume ratio and a variety of factors can influence the volume.

Atmospheric humidity
* Some atmospheric humidity influences rainfall.
* depends positively on evaporation from the Earth's surface.
* is expressed as a percentage of the moisture saturation of air.

Excess humidity
* can damage machines, funiture, art and hundreds of other important things
  - lead to the growth of dust mites and airborne bacteria
* can, over time, rot window woodwork.

### condition | wetness | humidity:

High humidity
* High humidities can be as detrimental as moisture
  - help extend vase life by conserving water loss through transpiration
  - seem to affect buffaloes less than cattle
* Most high humidity causes condensation.
* Some high humidity causes decay
  - rapid decay
* Some high humidity encourages growth
  - mold growth
* Some high humidity leads to growth
* allows mold to grow.
* appears to contribute to flower stalk stretching.
* can aid herbicide diffusion because the droplet dries more slowly.
* can also cause pruritus secondary to sweat retention in some individuals
  - release of small numbers of spores
  - be a breeding ground for a number of diseases
* can cause fog or clouds
  - mildew, while dry heat and direct sunlight can cause drying and cracking
  - mold, mildew, and serious rot
  - problems for hotels, motels, supermarkets, and other commercial buildings
  - rust on metal lids and rings
* can make pieces brittle
  - the flowers droop
  - produce warm and wet conditions which help grow moulds and mildew
  - promote mold growth
* causes an increase in pollen and mold production
  - mold to form and a very dry climate cause embrittlement
  - paper to curl and laser printers to jam
  - wood to swell
* contributes to the development of diseases.
* encourages diseases.
* favors spore formation while low humidity favors spore dispersal.
* feature of our climate and often affects our energy levels.
* has a marginal effect on plants
  - stagnant oppressive feel to it due to a lack of air movement in the atmosphere
* helps promote termite infestations
  - to reduce shrinkage caused by water loss
* increases the incidence of infection
  - potential for condensation which wets the entire truss assembly
* interferes with evaporation of the sweat.
* is always important before and during subsequent shedding cycles
  - common during the summer months
  - detrimental to many thrips species
  - essential for a healthy croton
  - known to create a good environment for fungi
  - most harmful and high temperatures accelerate the deterioration
* is necessary so they can drink moisture that collects on their webs
  - to reduce fruit shrinkage
  - present in Bahrain throughout the year and makes the summer months very oppressive
  - prevalent throughout the year, except in the more mountainous regions
  - the result of the lack of sunny days
* keeps meats and breads from drying out, while the high temperatures brown the outside.
* makes a rain forest hard to be burnt
  - evaporative cooling less efficient
* problem for many industries.
* promotes molds, mildew, biological contaminants, and a musty smell
  - various cricket diseases and mites
* reinforces the effects of temperature by reducing the cooling effects of sweating.
* slows the drying of the pollen and the pads.
* tends to dampen creativity and motivation.

Higher humidity
* encourages the growth of white rind, and blue cheese mold.
* is needed when propagating plants at warmer temperatures.
* promotes root growth and bulb decay.