Which problems can mining groundwater cause for an aquifer?(1 point) It adds pollution to wells.

It removes water more quickly than it can be replaced.

It becomes too expensive to maintain the aquifer.

It causes porous rock to suddenly harden.

Thermohaline circulation and gyres

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