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This Photograph Shows Chert

Question 93

Multiple Choice

This photograph shows chert. How does it form? This photograph shows chert. How does it form?   A)  evaporation of water in a lake or sea B)  accumulation of microscopic organisms composed of calcium carbonate C)  precipitation from seawater early in Earth's history D)  accumulation of silica-rich organisms or mixing of seawater and groundwater


A) evaporation of water in a lake or sea
B) accumulation of microscopic organisms composed of calcium carbonate
C) precipitation from seawater early in Earth's history
D) accumulation of silica-rich organisms or mixing of seawater and groundwater

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