Examlex
The DSM system is dynamic and has undergone several revisions. How, and in what ways, has the system changed over the years? What factors influenced these changes?
Nitrate
A compound containing nitrogen and oxygen that is commonly found in fertilizers and can cause environmental issues in water systems.
Earth's Chemical Cycles
Natural processes that recycle chemicals such as carbon, nitrogen, and oxygen between the Earth's atmosphere, hydrosphere, lithosphere, and biosphere.
Usable Forms
Refers to resources or materials that have been converted into a state where they are ready for use by organisms or human technologies.
Nitrogen
A chemical element with the symbol N and atomic number 7, making up about 78% of the Earth's atmosphere and essential for living organisms.
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