Why are infectious agents more easily spread more among people who live in a city such as the one pictured below? 
Definitions:
Imprinting
A kind of swift and irreversible learning that occurs at a particular life stage, usually early in life, leading to a long-lasting behavioral response to a specific individual or object.
Coordinate Movements
The ability to use different parts of the body together smoothly and efficiently in physical actions.
Classical Conditioning
Classical conditioning is a learning process wherein a neutral stimulus becomes associated with a meaningful stimulus, leading to an automatic response.
Operant Conditioning
A type of learning in which an animal is rewarded or punished for performing a behavior it discovers by chance.
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