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Which of the following is an indirect method for estimating the number of microbes in a sample?
Androgen
A type of hormone that plays a key role in the development of male traits and reproductive activity.
Testosterone
A steroid hormone primarily produced in males by the testes and, in small amounts, in females by the ovaries, playing key roles in health and sexual development.
Immigration
The action of coming to live permanently in a foreign country, often resulting in demographic, economic, and cultural changes within the host society.
Migration
The movement of people from one place to another, which could be within or across national borders, often for reasons such as seeking better economic opportunities or escaping conflict.
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