Native American Indian tribes lived off the land and wildlife in America for many centuries before European settlers arrived here. In many ways, their ways of living were more sustainable than the way in which we do things now. Which of these is NOT a reason the Indians lived more sustainably?

A) They populated the continent far less densely than we do now

B) They considered the land and animals to be their partners, not their property.
C) They were very careful to maintain strict boundaries between tribes and nations.
D) They generally hunted, gathered, and grew what they needed for survival, not more.

One kind of e-book display consists of millions of very small spheres that float in a thin fluid layer between two conducting transparent plates. each sphere is black on one side and white on the other, and possesses an electric dipole moment directed from the white side to the black. when an electric field is applied between the plates, the spheres rotate so that their dipole moment lines up with the field. depending on the fields direction, either the black or the white sides of th espheres can be made visible. the dipole moment of the spheres can be modeled as two opposite charges of magnitude 3.5 x 10^-15 c, separated by a distancce of 100 micrometers (um). what is the maximum possible torque on a sphere if the electric field between the transparent plates is 4.0 x 10^5 n/c