It is a true fact that the Rio Grande and the Rio Bravo del Norte are two different names for the same river. The correct option among the two options that are given in the question is the first option. The river is called by the name of Rio Grande in the United States of America and the same river is called by the name of Rio Bravo del Norte in Mexico.
Either a mountain or a valley. :)
Probably right on the equator. Tropical or whatever is on the equator.
The right option is; push-pull
Push pull is the concept described by the paragraph above
Push-pull is used to describe why individuals move from one location to another. Push-pull occurs due to the push factors, and pull factors which may be economic, social, political or environmental in nature. The push factors are the conditions such as unemployment, and famine that drive people away from an area while the pull factors are the conditions such as employment, and political freedom that attract people to move to a certain area.
