The Role(s) of the Sinuses Include(s)

question 1

Multiple Choice

The role(s) of the sinuses include(s)

• A) making the skull lighter.
• B) production of mucus that moistens and cleans the air.
• C) increasing surface area for gas exchange.
• D) extra source of air and increasing surface area for gas exchange.
• E) making the skull lighter and production of mucus that moistens and cleans the air.

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Definitions:

Developing Nations

Countries with a lower living standard, undeveloped industrial base, and low Human Development Index (HDI) relative to other countries.

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Countries that have highly developed economies, characterized by significant industrial growth and high levels of income.

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The rapid movement of large sums of money or capital out of a country due to economic or political instability.

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The funds that corporations and individuals use to invest in and finance new business ventures and operations.