Examlex
Using the data in the figure shown below, identify the spectral type of a star that has a main-sequence lifetime of about 500 billion years.
Lower Respiratory System
The part of the respiratory system including the trachea, bronchi, and lungs, involved in the vital process of gas exchange.
Epiglottis
A flap of cartilage located at the entrance of the larynx, which closes during swallowing to prevent food and liquid from entering the airway.
Hemispheres
Two halves of the brain, each responsible for different functions and controls opposite sides of the body.
Lung
A pair of respiratory organs located in the chest, involved in the process of oxygen exchange and carbon dioxide expulsion from the bloodstream.
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