Imagine cutting a bar of pure gold in half, and then cutting it in half again. Could you divide the gold like this forever? A. The particles will keep dividing forever
B. You cannot divide an atom of gold in half
C. Gold is too strong to be cut in half
D. Aliens exist

Ch4 and ph3 are both covalent since they are composed both of non-metals.    ch4 is non- polar because of  london forces and has a geometry of tetrahedral  ph3 , on the other hand, is umbrella shaped polar and has dipole-dipole intermolecular force (imf) . since ph3 is polar, it has a stronger imf   

The water cycle increase the water content in the earth atmosphere