Examlex
When joining three or more tables,you need to specify a join condition for one pair of tables.
Lung
One of the two respiratory organs located in the chest, which facilitate the exchange of oxygen and carbon dioxide between the air and blood.
Organisms
Living entities that can carry out life processes independently, ranging from bacteria to plants and animals.
Chemical Bonds
The attractive forces that hold atoms together in compounds, forming molecules and various types of structures.
Mucus
A sticky, slimy substance produced by mucous membranes and glands for lubrication and protection of certain parts of the body.
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