Mafic Rocks Like Basalt and Gabbro ________

question 179

Multiple Choice

Mafic rocks like basalt and gabbro ________.

• A)are major constituents of the continental crust
• B)are very low in their iron and magnesium contents
• C)form mainly in continental mountain belts
• D)make up most of the ocean floor and volcanic island chains

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Definitions:

Duodenum

The first part of the small intestine immediately beyond the stomach, where most of the chemical digestion takes place.

Peristalsis

Wavelike contractions that propel substances along a tubular structure such as the esophagus.

Constipation

Changes in the frequency of bowel movements that leads to the formation of hard, dry fecal material.

Diarrhea

Excessively frequent and watery bowel movements.