In a ________ economy, the behavior of buyers and sellers determines what gets produced, how it is produced, and who gets it.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
Approximately 500,000 babies are born each year in the United States to teenage mothers.
No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.
Thyroid conditions may make getting pregnant impossible.
People about to have surgery must tell their health care providers about all supplements they take.
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