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describe how oxgen and carbon dioxide cycle in the enviroment?
Question
Asked 2/22/2009 5:59:14 PM
Updated 7/29/2014 4:58:04 AM
4 Answers/Comments
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Flagged by selymi [7/29/2014 4:54:09 AM]
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User: what does native species mean?

User: what does endangered species mean?

User: what does exotic species mean

User: what does parasites mean

User: describe briefly the steps in the water cycle

User: what are the steps in the water cycle?

User: describe how oxgen and carbon dioxide cycle in the enviroment?

Weegy: Life forms takes in oxygen (O2) which they in turn excrete in the form of carbon dioxide (Co2). Carbon dioxide is needed for plants for the photosynthesis process.
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Question
Asked 2/22/2009 5:59:14 PM
Updated 7/29/2014 4:58:04 AM
4 Answers/Comments
This conversation has been flagged as incorrect.
Flagged by selymi [7/29/2014 4:54:09 AM]
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8
Native species - a species that is native (or indigenous) to a given region or ecosystem if its presence in that region is the result of only natural processes, with no human intervention.
Added 7/29/2014 4:54:07 AM
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Endangered species - a species at risk of extinction because of human activity, changes in climate, changes in predator-prey ratios, especially when officially designated as such by a governmental agency.
Added 7/29/2014 4:55:23 AM
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8
Exotic species - a species introduced either accidentally or deliberately by human actions into places beyond its natural geographical range.
Added 7/29/2014 4:56:46 AM
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Parasite - an organism that lives on or in an organism of another species, known as the host, from the body of which it obtains nutriment.
Added 7/29/2014 4:58:04 AM
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