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On average, the ratio of carbon to nitrogen is much higher in terrestrial plants than in other major
It is important to ask patients what other health care providers they are seeing, such as the dentis
President-elect Barack Obama 150 million tiny carbon nanotubes
The carbon-nitrogen-oxygen cycle of The Sun
Figure 7.1 shows the rapid decline in the trust of Americans in government since the 1960s. This de
Soil and the terrestrial reservoir for carbon