A mother is playing with her infant son at a park. She is smiling and making faces at him. The infant smiles back almost instantaneously. This is an example of the type of interaction that developmentalists call:a. synchrony.
b. social referencing.
c. social attachment.
d. temperament.

Apopulation is a group of individuals of a single species existing together in an area. a population’s range, the area it occupies, changes over time. populations, in turn, may form a network, or metapopulation, connected by individuals that move from one group to another. within a population, the distribution of individuals can be random, uniform, or clumped, and the distribution is determined in part by the availability of resources. how might the geographic range of a species change if populations could not exchange individuals with each other? how would your answer depend on what type of metapopulation existed?

Aprovision of the general agreement on tariffs and trade treaty (gatt)increased taxes on services between the us, mexico, and canada. reduced international tariffs on industrial goods by forty percent. increased us tariffs on agricultural products by forty percent. ended taxes on goods traded by the us, mexico, and canada.

What words in the preamble to the constitution reflect the principle of popular sovereignty