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* mesosphere The level of the earth’s atmosphere that exists above the stratosphere. * science, Inc. Microchem™ Tablet chlorinator by Mooers Products, Inc. microclimate

* SAB See “Science Advisory Board (SAB).” ...Advisory Board (SAB) A group of external scientists who advise the EPA on science and policy.

...لتسلسل شجرة الحياة المفترضة لتطور الكائنات <ref>http://www.telegraph.co.uk/science/4312355/Charles-Darwins-tree-of-life-is-wrong-and-misleading-claim-scientis ...why do we not find them embedded in countless numbers in the crust of the earth?" Darwin felt though that the "extreme imperfection" of the fossil record w

...n Agency]]}}</ref><ref name="Deadly">{{cite web|url=http://www.pbs.org/now/science/smog.html|title=Deadly Smog|accessdate=2006-08-02|author= |last= |first= |a ...till 'Dilution'|accessdate=2006-02-14|author=Gershon Cohen Ph.D.|publisher=Earth Island Institute}}</ref><ref name="What">{{cite web|url=http://www.cleanoce

* AAS American Association for the Advancement of Science. * air The mixture of gases, primarily oxygen and nitrogen, that surrounds the earth and forms its atmosphere.

...ck encountered below the mantle of loose rock and soil which occurs on the earth’s surface. ...used as a coagulant aid in water treatment systems. Sometimes used as the earth component or soil amendment for construction of a pond or land.ll liner bec