Please help asap loll

What are four significant sources of ghgs that come from wostem washington?

The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms

Which statement accurately represents the arrangement of electrons in bohr’s atomic model?