Which of the Following Correctly Describes Humus

question 173

Multiple Choice

Which of the following correctly describes humus? 

• A) the layer of freshly fallen leaves 
• B) microorganisms that are poisonous to soil 
• C) partially decomposed organic matter 
• D) the light coloured or nearly white layer

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Definitions:

High-Voltage DC

A system used for the transmission of electrical power over long distances with high voltage in direct current form, reducing power losses and increasing transmission efficiency.

Negative Charge

An electrical charge characterized by the presence of more electrons than protons, resulting in a net decrease in electrical potential.

Precipitator

An environmental control device, such as an electrostatic precipitator, that removes particles from a flowing gas using the force of an induced electrostatic charge.

Air Filter

A device that removes particles, such as dust and pollen, from air to improve quality or protect machinery by preventing the accumulation of contaminants.