Fungi is one type of pathogen which infects the surface of the skin and nails.
Athletes foot is also caused by fungi
The heart is located underneath the sternum in a thoracic compartment called the mediastinum, which occupies the space between the lungs
Crystalloids are aquous solution of mineral salts or other water soluble molecules
colloids contains larger insoluble molecules such as blood and gelatin.
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Active transport.
Passive transport, being its opposite, requires no energy at all. Therefore, active transport would require energy or ATP in order to move across.
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