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They don't save any overall. The extra electronics and equipment cost in terms of our environment. They do save some fuel though compared to cars of similar size. Some by as much as 10%. City driving is their best savings area.

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15y ago

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Where you get oxygen?

trees breathe out oxygen we breathe out carbon dioxide and trees breathe in carbon dioxide SAVE THE RAINFORESTS OR WE'LL DIE!!


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because they make carbon dioxide into oxyegen


What organisms save water by turning carbon dioxide into special carbon compound before carrying out photosynthesis?

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In deoxygenated blood is the partial pressure of carbon dioxide is greater than the partial pressure of oxygen left?

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What organisms save water by turn ing carbon dioxide into a special carbon compound before carrying out photosynthesis?

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