Examlex
An event can range from a user action, such as clicking the button on the screen, to a table update statement that automatically calls a database trigger.
Nonbiological Reservoirs
Environments or materials that can harbor or transmit disease-causing organisms without having biological functions themselves.
Aquifers
Underground layers of water-bearing rock or materials that can yield water for use.
Guano
The accumulated excrement of seabirds or bats, used historically as a highly effective fertilizer because of its high nitrogen, phosphate, and potassium content.
Limestone
A sedimentary rock composed mainly of calcium carbonate, often used in construction and as a raw material in cement production.
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