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What is a taggant? What purpose do taggants serve?
hi a taggant can mean a radio frequency microchip used in automated identification and data capture.,,is also a chemicar or physical marker add to materials to allow various forms of testing
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Asked 10/26/2011 1:07:46 PM
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Define sustainability and sustanable development.
Weegy: Sustainability is the capacity to endure. [ For humans, sustainability is the long-term maintenance of well being, which has environmental, economic, and social dimensions, and encompasses the concept of stewardship, the responsible management of resource use. In ecology, sustainability describes how biological systems remain diverse and productive over time, a necessary precondition for human well-being. Long-lived and healthy wetlands and forests are examples of sustainable biological systems. Sustainable development (SD) is a pattern of resource use, that aims to meet human needs while preserving the environment so that these needs can be met not only in the present, but also for generations to come (sometimes taught as ELF-Environment, Local people, Future). The term was used by the Brundtland Commission which coined what has become the most often-quoted definition of sustainable development as development that "meets the needs of the present without compromising the ability of future generations to meet their own needs. ] (More)
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Asked 10/19/2011 7:11:18 AM
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what is sustainable society?
Weegy: A sustainable society is one which can rely in itself to exist. (More)
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Asked 10/19/2011 7:24:36 AM
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It is essential to transition to a sustainable civilization.what are th major points to transition to a sustainable future?
Weegy: Sir/Madam To achieve sustainability will require a special level of dedication and commitment to care for the natural world and to act with justice and equity toward one another. (More)
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Asked 10/19/2011 7:29:43 AM
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define sustainable?
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Updated 10/19/2011 6:44:33 PM
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Sustainable means:1) of, relating to, or being a method of harvesting or using a resource so that the resource is not depleted or permanently damaged 2)Capable of being continued with minimal long-term effect on the environment 3)Able to be maintained at a certain rate or level 4) Able to be upheld or defended
Added 10/19/2011 6:44:33 PM
What are the three trophic levels?
Weegy: The three trophic levels are: primary producers, primary consumers and secondary consumers. Primary Producers Primary producers in an ecosystem exist at the lowest level of the food chain and are a source of energy and food. [ Primary producers are organisms that are able to convert solar energy into biochemical energy through photosynthesis, a process in which carbon dioxide is converted into sugar and oxygen, the main fuels of life. Green plants and bacteria are the most common type of primary producers. Primary Consumers An ecosystem's primary consumers depend on the fixed energy and biological fuel of primary producers in order to survive and flourish. Primary consumers are herbivores, meaning they are evolutionarily adapted to only eat plants. Deer, cows, elephants and mice are all examples of primary consumers. Crustaceans, such as zooplankton, are also primary consumers, feeding on tiny algae and bacterial cells that float to the top of lakes and oceans. Secondary Consumers Secondary consumers in a trophic level ecosystem sustain themselves by feeding on primary consumers. Some primary consumers are predators, hunting and killing the primary consumer. Examples of predators include mountain lions that kill and eat deer and hawks that kill and eat herbivore mice. Other types of primary consumers include bacteria and fungi that can feed on almost any organic material and break down the nutrients. You can often find bacteria and fungi on dead plants and in dead animal tissue. ] (More)
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Asked 10/19/2011 9:03:57 AM
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