how does iron formation form? multiple choice evaporation of water in a lake or sea accumulation of…

how does iron formation form? multiple choice evaporation of water in a lake or sea accumulation of microscopic organisms composed of calcium carbonate precipitation from seawater early in earths history accumulation of silica - rich organisms or mixing of seawater and groundwater

how does iron formation form? multiple choice evaporation of water in a lake or sea accumulation of microscopic organisms composed of calcium carbonate precipitation from seawater early in earths history accumulation of silica - rich organisms or mixing of seawater and groundwater

Answer

Brief Explanations:

Iron - formations are thought to have formed by precipitation from seawater early in Earth's history. Evaporation of water in a lake or sea is more related to salt - formation. Accumulation of microscopic organisms composed of calcium carbonate forms limestone. Accumulation of silica - rich organisms or mixing of seawater and groundwater is not the main process for iron - formation.

Answer:

precipitation from seawater early in Earth's history