Answer: Accommodation and convergence
Explanation: accommodation and convergence is a depth cue associated with reflex action of the eye, that is, the involuntary movement of the eye in response to a particular stimulus. Accommodation convergence explains the behavior of the eye that is, changes in shape of the lens and size of pupil with respect to the distance of objects from the eye.
As objects get closer to the eye, the eyes move inward and feels like eye muscles are working. When the objects recedes the muscles become relaxed.
Between 1870 and 1900, the largest number of immigrants continued to come from northern and western Europe including Great Britain, Ireland, and Scandinavia. But "new" immigrants from southern and eastern Europe were becoming one of the most important forces in American life. More controversial, and much more limited, was immigration from Asia and Latin America.
number 2 would probably be it because that's how immigrants act
We need to find better ways to manage the resources we already have. We also need to find alternative energies that last for ever or a really long time, eg. nuclear, solar, wind, water, etc .
