How does gypsum 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

Question

Quizplus · Accepted Answer

Gypsum forms primarily through the evaporation of water in a lake or sea, where it precipitates out of the evaporating water.

How Does Gypsum Form