Which of the following statements is true?
fusion splits atoms.
uranium 235 is produced from fission.
the heat from stars is created by fusion.
enrico fermi created the first nuclear bomb.

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   

Idon't know hope someone you

Ibelieve the answer is weathering,hope my answer has you : )