Examlex
Migratory birds sleep less during the migratory season because they:
Brucellosis
An infectious disease caused by the Brucella bacteria, transmitted from animals to humans, characterized by fever, sweats, and muscle pain.
Word Root
The base part of a word, to which affixes (prefixes and suffixes) can be added to create related words.
Kidney
A pair of bean-shaped organs in the renal system that filter waste products from the blood and excrete them as urine.
Urinary System
The organs of the body involved in the production, storage, and excretion of urine.
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