definition
| - Notable inclusions are minerals, compounds, chemicals, or physical objects that are not the outcome of purposeful human effort, but are found naturally occurring. Other natural objects (such as rock, fossil, etc.) are also found under this SuperType. Natural Substances include subatomic particles. The contrast is with Earthscape, which covers natural "features" or living substances, which are covered under the appropriate SuperTypes. Chemicals can be Natural Substances, but only if they are naturally occurring, such as limestone or salt.
- Notable inclusions are minerals, compounds, chemicals, or physical objects that are not the outcome of purposeful human effort, but are found naturally occurring. Other natural objects (such as rock, fossil, etc.) are also found under this SuperType. Natural Substances include subatomic particles. The contrast is with Earthscape, which covers natural "features" or living substances, which are covered under the appropriate SuperTypes. Chemicals can be Natural Substances, but only if they are naturally occurring, such as limestone or salt.
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