natural decrease
The rate of population decrease measured by subtracting the natality rate from the mortality rate; see natural increase.

Online Dictionary of Invertebrate Zoology. . 2005.

Look at other dictionaries:

  • natural decrease —   in population studies, when the death rate is higher than the birth rate …   Geography glossary

  • Natural gas prices — at the Henry Hub in US Dollars per MBtu for the 2000 2010 decade. Natural gas prices, as with other commodity prices, are mainly driven by supply and demand fundamentals. However, natural gas prices may also be linked to the price of crude oil… …   Wikipedia

  • Natural gas storage — Natural gas, like many other commodities, can be stored for an indefinite period of time in natural gas storage facilities for later consumption. Contents 1 Usage 2 Measures and definitions 3 Types 3.1 …   Wikipedia

  • Natural cleaning product — Natural cleaning products are substances used to clean, deodorize, and/or disinfect which have natural substances as their active ingredients. In some cases, natural cleaning products may be less damaging to the environment and safer for humans… …   Wikipedia

  • Natural population growth — Natural population increase happens as people are born or immigrate into a country, and decrease as people die or emigrate. Rates of population growth, usually expressed as a percentage, vary greatly. This statistics related article is a stub.… …   Wikipedia

  • Natural gas — For other uses, see Natural gas (disambiguation). Natural gas extraction by countries in cubic meters per year. Natural gas is a naturally occurring gas mixture consisting primarily of methane, typically with 0–20% higher hydrocarbons[1] …   Wikipedia

  • natural selection — the process by which forms of life having traits that better enable them to adapt to specific environmental pressures, as predators, changes in climate, or competition for food or mates, will tend to survive and reproduce in greater numbers than… …   Universalium

  • Natural resource management — The Tongass National Forest in Alaska is managed by the United States Forest Service. Natural resource management refers to the management of natural resources such as land, water, soil, plants and animals, with a particular focus on how… …   Wikipedia

  • Natural hazard — This article is about the natural hazards that may lead to disasters. For natural disasters, see natural disaster. A natural hazard[1] is a threat of a naturally occurring event that will have a negative effect on people or the environment. Many… …   Wikipedia

  • Natural satellite habitability — Artist s impression of a hypothetical habitable moon of Upsilon Andromedae d Natural satellite habitability is the measure of a natural satellite s potential to sustain life. The study of natural satellite habitability is important to… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”