Предмет: Алгебра, автор: zefirk79

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Автор ответа: aarr04594

Відповідь: 4.

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розв'язання завдання додаю

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Предмет: Английский язык, автор: pol34511

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The cells of the human body require a constant stream of oxygen to stay alive. The respiratory system provides oxygen to the body’s cells by removing carbon dioxide. The respiratory system is responsible for the respiration, the process by which our organism exchanges gases with its environment. The act of breathing with the lungs is called ventilation and includes inhalation (breathing in) and exhalation (breathing out).
Structurally the respiratory system consists of the upper and lower respiratory tracts. The upper respiratory tract includes the nose, the pharynx, the larynx, and the epiglottis. The lower respiratory tract includes the trachea, two bronchi, the bronchioles, alveolar ducts and alveoli.
The nose humidifies, warms, and filters inspired air. The nose and nasal cavity form the main external opening for the respiratory system.
The mouth or the oral cavity is the secondary external opening for the respiratory tract. The pharynx, also known as the throat, is a muscular funnel. It extends from the nasal cavity to the larynx and esophagus.
The larynx, also known as the voice box, is a short section between the pharynx and trachea.
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