Which of the Following Is a Source of Methane

question 33

Multiple Choice

Which of the following is a source of methane?

• A)Gastrointestinal tract of cattle and sheep
• B)Photosynthesis from halophiles in the Dead Sea
• C)Decomposition of organic detritus on the forest floor
• D)Degradation of cellulose and lignin by fungi
• E)All of these processes produce methane.

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Definitions:

Trailer Hand Control

A device installed in towing vehicles for manual control of a trailer’s brakes independently of the vehicle's brakes.

Service Brakes

The primary braking system used in vehicles for normal stopping operations, as opposed to auxiliary systems like parking or emergency brakes.

Foundation Brakes

The braking components downstream from the actuator that mechanically effect braking on a wheel. In a truck S-cam brake assembly, the foundation brakes consist of a slack adjuster, an S-camshaft, brake shoes, and a drum.

S-Cam-Actuated

Describes a type of brake system, particularly in heavy vehicles, where the braking action is initiated by the rotation of an S-shaped cam.