utilization of recycled resources
21Home front during World War II — U.S. Government Publicity photo of American machine tool worker in Texas. The home front covers the activities of the civilians in a nation at war. World War II was a total war; homeland production became even more invaluable to both the Allied… …
22Resource — A resource is any physical or virtual entity of limited availability, or anything used to help one earn a living.fact|date=February 2008 In most cases, commercial or even ethic factors require resource allocation through resource management.Types …
23Deforestation — For other uses, see Deforestation (disambiguation). Jungle burned for agriculture in southern Mexico …
24Garbage collection (computer science) — This article is about garbage collection in memory management. For garbage collection in an SSD, see garbage collection (SSD). For other uses, see garbage collection. In computer science, garbage collection (GC) is a form of automatic memory… …
25Hybrid electric vehicle — The Toyota Prius is the world s top selling hybrid car, with cumulative global sales of 2.36 million units by August 2011.[1] A hybrid electric vehicle (HEV) is a type of hybrid vehicle and electric vehicle which combines a conventional internal …
26Economy of Nigeria — Currency Nigerian naira (N) (NGN) Trade organisations OPEC Statistics GDP $377.6 billion (2010 est.) (PPP; 31st) …
27Zinc — This article is about the metallic element. For other uses, see Zinc (disambiguation). copper ← zinc → gallium ↑ Zn ↓ Cd …
28biosphere — biospheric /buy euh sfer ik/, adj. /buy euh sfear /, n. 1. the part of the earth s crust, waters, and atmosphere that supports life. 2. the ecosystem comprising the entire earth and the living organisms that inhabit it. [1895 1900; < G Biosphäre; …
29Restriction of Hazardous Substances Directive — European Union directive: Directive 2002/95/EC Directive on the restriction of the use of certain hazardous substances in electrical and electronic equipment Made by Council Parliament …
30Carbon tax — Part of a series on Green economics Concepts …
