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Great Filter
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#	Item
21	Standard Operating Procedure for the Sampling of Particulate-Phase and Dissolved-Phase Organic Carbon in Great Lakes Waters Grace Analytical Lab Add to Reading List Source URL: www.epa.gov Language: English - Date: 2011-09-28 14:53:59 Filters Analytical chemistry Filtration Filter Dissolved organic carbon Water filter Total organic carbon Purified water Chemistry Water Water pollution
22	Trends in New Hampshire’s Environment Coastal Waters: Eelgrass Cover Eelgrass is an underwater habitat at the base of the estuarine food web. Healthy eelgrass beds filter water and stabilize sediments and provide habi Add to Reading List Source URL: des.nh.gov Language: English - Date: 2013-04-16 15:00:19 New Hampshire Swift River Geography of the United States Intracoastal Waterway Great Bay
23	The Great Outdoors. Now Even Greater. If you love the Maine outdoors for its clean air, there’s good news. A new law makes common areas in state parks smoke-free. This includes: Add to Reading List Source URL: www.tobaccofreemaine.org Language: English - Date: 2010-01-28 13:19:29 Addiction Cigarettes Cigarette Passive smoking Nicotine Tobacco smoking Cigar Animals and tobacco smoke Cigarette filter Smoking Human behavior Tobacco
24	Zebra and quagga mussels invasive aquatic species What do invasive mussels do? Mussels are filter feeders that can filter large volumes of water (up to 1 Liter/day). In some cases they can filter the whole volume of a la Add to Reading List Source URL: www.usbr.gov Language: English - Date: 2012-09-11 17:34:39 Zoology Zebra mussel Quagga mussel Mussel Great Lakes Aquatic invasive species in Canada Dreissenidae Phyla Protostome
25	Accessing and Monitoring Floatable Debris Add to Reading List Source URL: water.epa.gov Language: English - Date: 2011-09-10 01:03:35 Pollution Aquatic ecology Marine debris Water pollution Earth Debris Litter Cigarette filter Great Canadian Shoreline Cleanup Waste Environment Ocean pollution
26	Shellfish Clean the Water by Filter Feeding • A single oyster can clear over 15 gallons a day, retaining particles as small as 2 microns. Add to Reading List Source URL: www.ecsga.org Language: English - Date: 2014-03-19 16:02:28 Fishing industry Shellfish Fish farming Oyster Shellfish Association of Great Britain Oyster Reef Restoration Aquaculture Food and drink Seafood
27	Minimize Down Time! Masters Equipment Co. Take advantage of this great deal and be Add to Reading List Source URL: mastersequipmentco.com Language: English - Date: 2013-12-31 10:39:17 Service Filters Technology Air filter Auto maintenance Transport Automobile maintenance Road transport
28	Conchological Society of Great Britain & Ireland Add to Reading List Source URL: www.conchsoc.org Language: English - Date: 2011-12-18 18:48:13 Pets Marine aquarium Aquarium Filter Substrate Water filter Reef aquarium Refugium Fishkeeping Personal life Recreation
29	In the Great Silence there is Great Hope Add to Reading List Source URL: www.nickbostrom.com Language: English - Date: 2007-07-21 21:42:20 Mysteries Open problems SETI Great Filter Zoo hypothesis The Universe Space colonization Earth in science fiction Extraterrestrial Civilizations Astrobiology Extraterrestrial life Fermi paradox
30	PDF Document Add to Reading List Source URL: www.nickbostrom.com Language: English - Date: 2008-05-29 11:30:19 SETI Fermi paradox Open problems Risks to civilization humans and planet Earth Great Filter Self-replicating spacecraft Search for extraterrestrial intelligence Extrasolar planet Space colonization Astrobiology Extraterrestrial life Space

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