Given the fact that:  Older rocks are at the bottom and younger rocks are at the top.  Answer the question:   A person is digging up rocks, and wants to get the newest ones. The person will dig deeper or shallower?
shallower

Given the fact that:  The upper rock layers are much younger.  Answer the question:   Rich was examining a cliff face. Which part of the cliff is older, geologically speaking the base or the top?
the base

Given the fact that:  The more branching there is in isomers, the lower the boiling and melting points are.  Answer the question:   If an isomer has more branching than another isomer, it should have a higher or lower melting point?

lower