Psychology: Which belief about attachment did Harlow's work with monkeys disprove? Attachment is based on a desire for nourishment.
Attachment is based on emotional connection.
Attachment requires physical contact.
Attachment to a caregiver develops during childhood.
Attachment is not influenced by parental behavior.

A. describe the model of urban structure most often observed in mega-cities in developing countries. explain how this model differs from common urban structures in north america. b. describe at least two factors leading to the growth of mega-cities in developing or least-developed countries. c. identify and explain two factors that led to the formation of squatter settlements in mega-cities in developing countries.