______ Is the Initial Stage in the Development of Coal

question 6

Multiple Choice

______ is the initial stage in the development of coal.

• A) Peat
• B) Lignite
• C) Sub-bituminous
• D) Bituminous
• E) Anthracite

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Definitions:

Pharynx

The muscular tube at the back of the nose and mouth that connects them to the esophagus.

Serous Fluid

A clear, watery fluid that lubricates the surfaces of membranes lining body cavities and organs.

Pleura

Thin layers of tissue that line the lungs and the inside of the chest cavity, providing lubrication necessary for the lungs to move smoothly during breathing.

Thorax

The chest cavity.