Cave Pearls Have a Round Shape Because

question 27

Multiple Choice

Cave pearls have a round shape because:

• A) erosion tends to remove any edges or corners.
• B) the crystalline structure of travertine is spherical.
• C) they form in agitated pools that keep the pearl in motion.
• D) they develop on smooth, round sand grains.

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Definitions:

Pseudostratified Epithelium

A type of epithelial tissue that appears to be stratified but is actually a single layer of cells with varying nuclei heights, found in the respiratory tract.

Smooth Muscle

A type of muscle found in the walls of internal organs such as the stomach, intestines, and blood vessels, which contracts involuntarily.