Which of the following geographic characteristics of the united states has had a positive influence on the country’s political status? access to both the pacific and atlantic oceans limited number of neighboring countries regional differences among the population country’s proximity to the mexican border i only ii only i and ii i, ii, and iii i, ii, iii, and iv

Agerman mapmaker named a continent after me

According to the federal regulations, which of the following studies meets the definition of research with human subjects? a. a researcher uses the customs office’s passenger lists for ships bringing immigrants to the us between 1820-1845 to track the numbers of immigrants from certain ethnic groups.b. a researcher conducts a linguistic study of comments posted on a local public blog.c. a developmental psychologist videotapes interactions between groups of toddlers and their care givers to determine which intervention methods most effectively manage aggression.d. a researcher asks the director of a local free clinic about the number of patients in the last two years with newly diagnosed hiv/aids.

At 3476 kilometer the moon's diameter is slightly less than the distance across from what