Examlex
The oxidation of ammonia (NH4+) to nitrate (NO3-) and nitrite (NO2-) is called ______.
Rural Areas
Regions of land that are not densely populated and are often characterized by farming or natural settings.
Agriculture
The practice of cultivating the soil, growing crops, and raising livestock for the purpose of food production or other agricultural products.
Urban Areas
Densely populated regions that are characterized by significant built environment and infrastructure, including cities and towns.
Developing World
Nations with a lower living standard, undeveloped industrial base, and low Human Development Index relative to other countries.
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