Natural

1. Environmental concerns.

Existing in nature, without human manufacture or other involvement.

For example, natural assets include geology, soil, air, water and all living things.

2. Information technology - code - language.

In relation to language, relating to standard human language rather than computer code.

3. Markets.

A market structure or a market rate that appears efficient and sustainable.

For example, a natural monopoly, or a natural level of interest rates.

4. Financial maths - maths - logarithms.

A natural logarithm is a logarithm which uses the exponential constant 'e' (approximately 2.718282...) as its base.

It is named natural because so many processes in nature can be described by it.

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