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Picking
* are actions
  - guidings
  - human activities
  - manual labor
  - output
  - transport
* helps the tree to make new growth covered with buds.
* is active around rainfalls
+ Bass guitar, Strings and sound: Guitars
  * Picks made of metal or plastic may also be used, and yield a sharper sound than plucking with fingers. Picking is sometimes combined with muting techniques to create distinctive sounds.

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Feather picking
* can result in bare patches of skin, or even breakage in the skin itself.
* form of self-mutilation which can can result from boredom and stress.
* is generally a problem of birds in captivity.

Mushroom picking
* is the main source of income for many people.
* tradition going way back.

Poultry production
* exists as an industry, because poultry and eggs are valuable as human food.
* generates large volumes of litter.
* involves a lot of labor.
* is also important
  - based on a pyramid
  - definitely lower on society's pecking order than milking cows or raising hogs
* very important source of animal protein for the entire Asian continent.

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Primary production
* Most primary production affects atmospheres.
* Most primary production occurs during brief grow seasons
* decreases in winter and leaf production varies throughout the year.
* is an initial response process to increased nutrient loading
  - high at the equator because of upwelling
  - strongly seasonal, and can be elevated in mesoscale jets and eddies
* is the creation of new organic matter by plants and other autotrophs
  - energy incorporated into green plants by photosynthesis
  - rate of plant photosynthesis
  - synthesis of organic compounds from atmospheric or aqueous carbon dioxide
  - very high in coral reefs but low in surrounding waters
  - in autotrophic organisms of an ecosystem
* represents the input way of inorganic carbon into the ocean organic carbon pool.

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Seed production
* Most seed production occurs over time.
* Some seed production produces seeds
  - requires pollination
* begins at an early age.
* follows a pathway in conifers that differs from that in flowering plants.
* has distribution.
* is directly dependent on the number of plants maturing in any particular year
  - poor because flowers are limited to the vertically growing kudzu stems
  - proportional to plant height
  - typically lower in terrestrial plants
  - variable and dependent on several environmental factors
* requires flower pollination and is therefore dependent on insect populations.
* varies greatly from place to place and year to year
  - widely depending on climatic conditions during the growing season

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Sperm production
* begins and there is rapid growth of the penis and testes
  - in the seminiferous tubules of the testes
* continuous process once puberty is reached.
* is affected by temperature
  - called spermatogenesis
  - constant following puberty
  - controlled by hormones
  - highly sensitive to body temperature
  - reduced in men who drive a truck for hours or regularly sit in hot tubs
* occurs best at a temperature slightly below normal body temperature
  - in a regular, monthly cycle
  - on a continuous basis in healthy men without any sperm production problems

Spore production
* Most spore production varies from years.
* begins in early spring and continues until fall
* is favored by high humidity
  - favoured by poor soils, high pH and wet weather
* occurs predominately at night or during long overcast periods.
* starts in the spring as temperatures increase and wet weather prevails.

Swine production
* has cultural as well as economic importance.
* impacts the environment and public health are listed below.