Examlex
Various new cars are sold with sensors that automatically turn on the headlights at night or during low light conditions. Would these sensors create a positive externality or a negative externality? How?
Blood Vessels
Tubular structures in the circulatory system through which blood flows, including arteries, veins, and capillaries, crucial for transporting nutrients, oxygen, and waste materials.
Feathers
The unique, complex, keratinous structures growing from the skin of birds and some dinosaurs, having diverse functions including flight, insulation, and display.
Endotherms
Endotherms are organisms that maintain their body temperature through internal metabolic processes, regardless of external environmental temperatures.
Physiological Mechanisms
The processes and functions of living organisms or their parts, including physical and chemical processes that contribute to vitality.
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