Examlex
Pigeons learn to flap their wings to avoid shock ________ easily than they learn to peck a disk to avoid shock.They learn to flap their wings to obtain food ________ easily than they learn to peck a disk to obtain food.
Emotionally Upset
A state of distress or disturbance in one's emotional equilibrium, often resulting from a specific event or situation.
Serotonin Levels
The concentration of serotonin, a neurotransmitter, in the human body that influences mood, emotional well-being, and several physical processes.
Natural Selection
A process in biological evolution where organisms with traits better suited to their environment are more likely to survive and reproduce.
Double Helix
The structure of DNA, characterized by two strands that wind around each other like a twisted ladder, discovered by James Watson and Francis Crick.
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