C) when two electrons occupy the bonding molecular orbital above, what type of bond results? explain.

There are only two possible bonds when molecular orbitals combine with each other. It can either be sigma bond, or a pi bond. You can differentiate between them by looking at the way they bond together. Sigma bond are much stronger because the orbitals are superimposed on each other. On the other hand, pi bond are overlapped only sideways.

Organisms are more likely to be more preserved in mud than sand because mud is moist and wet, while sand is very dry.