What is the electron domain geometry about phosphorus in the hexafluorophosphate anion (pf6−) g?

Electron domain geometries are linear, trigonal planar, tetrahedral, trigonal bipyramidal, or octahedral. For PF6- its electron domain geometry is an octahedral, its molecular geometry is also octahedral. Octahedral domain geometry is where six atoms are symmetrically arranged around a central atom.

in cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. a contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes.

explanation:

geosphere and hydrosphere.

this is because the geosphere has to do with geological events, while the hydrosphere controls all water on earth.