Examlex
Researchers are studying how rapidly a hungry pigeon in a confined cage will learn to peck at a lighted disk in order to receive food.The researchers are most clearly using a(n) ________ to study learning.
Legs
Limbs on the lower part of the body, enabling movement and support of an individual's weight.
Aortic Semilunar
Relating to the semilunar valve located between the left ventricle of the heart and the aorta, regulating blood flow.
Aorta
The largest artery in the body, carrying oxygen-rich blood from the heart to various parts of the body.
Contracts
Legally binding agreements between two or more parties that outline obligations and rights.
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