Answer:
<h2>
surface of a flat table</h2>
The surface of a flat table best describes a plane.
Answer:
D. were widespread due to many low-lying land masses.
Explanation:
Cambrian Period was the first geological period of the Paleozoic Era, it occurred between two ice ages; Proterozoic and Ordovician. During these era, there were mass extinctions due to the decrease in global temperature.
Cambrian seas were widespread due to many low-lying land masses.
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