Nitrogen isotopes are variants of the nitrogen element that have the same number of protons but different numbers of neutrons, leading to different atomic masses. These isotopes, primarily nitrogen-14 ($^{14}N$) and nitrogen-15 ($^{15}N$), are crucial in various scientific fields as they help in tracing processes like nitrogen cycling in ecosystems, investigating pollution sources, and understanding ancient materials. Their distinct ratios can reveal important information about environmental conditions and biological processes.
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