How did ancient greeks figure that the earth was spherical rather than flat? choose all that apply 1. viewing lunar eclipses 2. watching ships departing off the horizon 3. calculating gravitation changes at varying elevations 4. noticing changes in the stars at different locations 5. calculating angular changes of shadows

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)