http://homepages.nyu.edu/~pet205/biogeochem1.html BIOGEOCHEMICAL CYCLES Biogeochemical Cycle : the cycling of chemical elements required by life between the living and nonliving parts of the environment. Some examples
http://en.wikibooks.org/wiki/Ecology/Biogeochemical_cycles Planet earth from space In the previous chapter on environmental response, we considered the various ways that individual organisms respond to the physical, chemical, and/or
http://www.uen.org/themepark/cycles/nature.shtml Nature’s cycles have to do with how the earth renews itself. The living things within an ecosystem interact with each other and also with
http://www.uen.org/themepark/cycles/nature.shtml Nature’s cycles have to do with how the earth renews itself. The living things within an ecosystem interact with each other and also with
http://www.geography4kids.com/files/cycles_energy.html Energy does not cycle the way nutrients and atoms do. Energy enters the ecosystem from the Sun and exits after the organisms have taken as much
(Sources: http://www.bbc.co.uk/schools/gcsebitesize/geography/ecosystems/index.shtml & http://en.wikipedia.org/wiki/Biogeochemical_cycle ) Ecosystem Cycles: Energy and Nutrient Transfers All ecosystems depend on two important processes: The flow of energy, and the recycling of nutrients. These processes
In Nature everything is circulated. The two broad categories of global cycles are sedimentary and biological. A short but insightful article. http://www.libraryindex.com/pages/3191/Biogeochemical-Cycles.html The chemical elements
http://www.nwrfc.noaa.gov/info/water_cycle/hydrology.cgi This is an education module about the movement of water on the planet Earth. The module includes a discussion of water movement in the
The Hydrological Cycle (also known as the water cycle) is the journey water takes as it circulates from the land to the sky and back again.
http://www.independent.co.uk/environment/carbon-dioxide-accumulates-as-seas-and-forests-struggle-to-absorb-it-9722224.html Carbon dioxide is being accumulated in the atmosphere at the fastest rate since records began, as scientists warn that the oceans and forests may
Greenhouse Gases Hit Record High Amid Fears of CO2 Saturation Point http://news.nationalgeographic.com/news/2014/09/140909-record-greenhouse-gases-carbon-sinks-global-warming-ocean/ Data suggest natural “carbon sinks” may be nearing exhaustion, say some scientists, although
http://eschooltoday.com/ecosystems/the-nitrogen-cycle.html Nitrogen is also key in the existence of ecosystems and food chains. Nitrogen forms about 78% of the air on earth. But plants do
http://eschooltoday.com/ecosystems/the-carbon-cycle.html The carbon cycle is very important to all ecosystems, and ultimately life on earth. The carbon cycle is critical to the food chain. Living
http://www.edu.pe.ca/southernkings/igneousjj.htm The rock cycle is an ongoing process, beginning as rocks are pushed up by tectonic forces, and eroded by wind and rain. The eroded
Short-circuiting the phospherous cycle http://sciblogs.co.nz/crikey-creek/2009/10/09/p-addiction-overdose-and-eutrophication/ P addiction, overdose and eutrophication Daniel Collins We have an addiction problem. The craving for P goes right down to
by Joseph West, Demand Media http://everydaylife.globalpost.com/recycling-matter-ecosystem-34660.html Undisturbed natural ecosystems are able to maintain a vibrant diversity of life because they incorporate intricate recycling systems that