Select the one substance that is not a mineral.

 - Wood is a body part of a plant. It is formed in nature.
 - Calcite is formed in nature. It is a pure substance.
 - Hematite is formed in nature. It is a pure substance.
Compare the properties of each substance to the properties of minerals. Select the substance whose properties do not match those of minerals.
Calcite is a mineral.
Hematite is a mineral.
Wood is a body part of a plant. But minerals are not made by living things.
So, wood is not a mineral.