The magnetic iron oxide mineral is called .

Magnetite, also called lodestone, or magnetic iron ore, iron oxide mineral (FeFe2O4, or Fe3O4).

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Magnetite

Explanation:

Today we call lodestone magnetite. Magnetite is a mineral that is found all over the world. Its usual occurrence is as small crystals in igneous rocks, although sometimes large masses are found. Magnetite is an iron oxide. Black particles in sand are commonly magnetite.

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.

the atmospheric gas that forms a mild acid when dissolved in water is called carbon dioxide. the correct answer is a. 2.) chemical weathering would cause an inscription on a marble headstone to become harder and harder to read over time.