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What are the main mineral sources of phosphorus?
Close Minded
Having or showing a rigid opinion or standpoint, not open to new ideas or arguments.
Open Membership
A policy that allows anyone who meets certain criteria to join or participate in an organization without restrictions.
Alcoholics Anonymous
A worldwide fellowship of individuals who share their experience, strength, and hope with each other to solve their common problem of alcoholism.
Structure
The arrangement or organization of elements within a system, providing a framework or order.
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