At the most basic level, humans need which of the following to establish a successful inhabitable settlement.
a.
arable land
b.
cooler climates
c.
mineral resources
d.
transportation technology

Astate's representation in the u.s. senate is based on a) equal representation. b) the state's population. c) the state's electoral votes. d) the size of their major cities.this independent regulatory agency was created in 1974 to oversee and regulate the financing of political campaigns in the united states. a) warren cthis independent regulatory agency was created in 1974 to oversee and regulate the financing of political campaigns in the united states. a) warren commission (wc) b) federal election commission (fec) c) equal opportunity commission (eoc) d) securities and exchange commission (sec)

What are the answers for the following questions?

Describe the four major spheres of the earth system; identify the parts of the earth they each represent. explain what is meant by the "earth system."