If Projections Hold True, the Population of the United States

question 2

Multiple Choice

If projections hold true, the population of the United States will climb to at least ________ million by 2030.

• A)290
• B)300
• C)310
• D)320
• E)370

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Definitions:

Parietal Cells

Cells in the lining of the stomach that produce hydrochloric acid and intrinsic factor, essential for the digestion process and absorption of vitamin B12.

Absorption

The process by which substances are taken up from the environment and enter the bloodstream or tissues of the body.

Digestive Tract

The series of organs and structures through which food passes, where it is broken down and nutrients are absorbed.

Trypsin

An enzyme produced in the pancreas that helps digest proteins by breaking them down into amino acids.