### activity | use:

Land use
* Every land use has an impact on the environment.
* affects likelihood
  - water quality
* are the major human forces that shape and organize rural communities.
* can affect groundwater quality
  - contribute to the volume of water reaching the river, in a similar way to clay soils
  - have an important effect on transportation
* constitutes agriculture s most important contribution to emissions.
* dynamic phenomenon that can change in the space of a few days or weeks.
* have a powerful impact on water quantity and quality.
* is about equally divided between cropland, pasture and woodland
  - an important determinant of the function of an area's roads
  - another major factor in the environmental impact of biological energy
  - controlled by local governments
  - different because it refers to how humans make use of the land
  - discussed in terms of trends, farm size, crops, livestock, and pastures
* is dominated by a sequence of short fallow and agricultural lands and cocoa agroforests
  - wildlife habitat and recreation
  - driven by property taxes
  - inherently a responsibility of municipal and county governments
* is predominately agricultural and consists mainly of pasture and cropland
* is the greatest influence over nitrate concentration
  - manner in which human beings utilize a specific tract of the earth's surface
  - presentation of human activities on the land
  - where sustainable development gets real
* key component of the historic environment.
* mix of agriculture, forest, and urban areas
  - residential, recreational, agricultural, and industrial enterprises
* plays an essential role in greenhouse gas emissions from the natural environment
  - important role in protecting the environment, too
* provides many of the chemical and sediment inputs that affect water quality.
* refers to how humans employ the land.
* represents a critical intersection of the economy and the environment.
* varies from forest, to agriculture, to urban.
* very important dynamic system in developing countries.
+ River Fal, Geography: Cornwall :: Rivers of England
  * The catchment of the Fal is predominantly Devonian slates, shales and grits, with granite in the upper reaches. Land use is mainly agricultural with some woodland.

Opiate use
* causes nausea and vomiting
  - tolerance, then physical dependence or addiction
* remains very low among juvenile arrestees.

Prolonged use
* can cause coughing, wheezing, and lung infections the same as cigarettes
  - liver disorders, heart disease, cancer, and reproduction problems
  - elevate testosterone production in males and females
  - result in addiction
* is known to affect sexual function and libido in both men and women.

Reduce energy use
* has benefits
  - environmental benefits
* has significant benefits

Regular use
* can delay the onset of puberty in young men and reduce sperm production
  - lead to tolerance, addiction, depression, and cognitive impairments
  - make a person with migraines dependent on caffeine
* causes loss of anxiety, decreased appetite for lying, cheating, stealing and hating
  - for lying, stealing, hating
* defines the grain of our muscles and tendons.

Steroid use
* can also contribute to easy bruising and tearing of the skin
  - become addictive
  - cause emotional and psychological changes
* is dangerous, especially for girls
  - especially risky for teenagers

Substance use
* can be both a cause and a symptom of depression.
* is often the silent and unseen cause of work-related accidents.

Sustainable use
* enables conservationists to justify conservation as a productive form of land use.
* is also an issue for marine based tourism.