Which Soil Horizon Contains the Most Organic Material

question 27

Multiple Choice

Which soil horizon contains the most organic material?

• A) A
• B) O
• C) B
• D) E

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Definitions:

Rectus Abdominis

A long muscle that runs vertically on each side of the anterior wall of the human abdomen, known for forming the "six-pack" in well-developed individuals.

Posterior Deep Pectoral

A muscular region located deep within the chest, often referred to in the context of anatomy and muscle structure.

Triceps Brachii

A major muscle of the upper arm responsible for extension of the elbow joint, consisting of three heads (long, lateral, and medial).

Points of Origin

Specific locations on bones from where muscles arise, serving as anchor points for muscle attachment in the skeletal system.