the field of psych is extremely variable...your earnings depend entirely on what field of psych you end up in. Industrial-Organizational psychologists generally earn the most, depending on the area. You can major and psychology and not necessarily get a job directly related to it - I have a friend with a BA in psychology who now works in public affairs. I believe she makes $45K/year.
In order to become a librarian at any level, you need to get an MLS (Masters in Library Science). Becoming a librarian does not necessarily condemn you to working the book stacks in an elementary school, most people go on to specialize as research librarians at colleges or universities and earn around $55K/year, again depending on the region.
Major steps in the coagulation cascade
Notice the reddish-brown haze caused by nitrogen oxides that is often over many major cities.
Major groups of forest biomes
Personality Psychology: Foundations and Findings (Miserandino)
Maternal age is the major risk factor for autosomal trisomies of all types. By age 42, about one in
Major features of human genome