Gases Such as CO₂ and Methane Are Considered Greenhouse Gases

question 25

Multiple Choice

Gases such as CO₂ and methane are considered greenhouse gases.This is because

• A)they are the most common in the atmosphere allowing them to trap more heat than the other gases.
• B)they form covalent bonds and hence can easily act as a shield for heat.
• C)the vibrational modes of the molecules are in the infrared region which imply that they readily absorb radiant heat thus preventing it from escaping into space.
• D)the gases are formed by human activity resulting in offsetting the natural balance in the gas concentrations.
• E)None of the above statements is correct.

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Definitions:

Atelectasis

A condition characterized by the partial or complete collapse of lung tissue, affecting the exchange of oxygen and carbon dioxide.

Oxygen Saturation

The percentage of hemoglobin binding sites in the bloodstream occupied by oxygen, indicating the efficiency of oxygen transport.

Tracheostomy Tube

A tube inserted through a surgical opening in the neck into the trachea to facilitate breathing.

Humidified Oxygen

Oxygen that is moistened to prevent dryness in the nasal passages and throat of patients requiring supplemental oxygen.