Examlex
Describe the conditions in the prisoner-of-war camps and examine the prisoner exchange controversy.
Four-Chambered Hearts
A heart structure consisting of two atria and two ventricles, found in mammals and birds, allowing for efficient oxygenation of blood.
Air Sacs
Air sacs are part of the avian respiratory system, providing birds with the ability to engage in highly efficient gas exchange.
Warm-Blooded
Organisms, primarily mammals and birds, capable of maintaining a constant body temperature regardless of environmental conditions.
Variable Body Temperature
Condition where an organism's body temperature fluctuates based on external environmental conditions, typically seen in ectothermic animals.
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