1. Examples = biology, vital
Root = bio, vit
Meaning = life
Examples = biology, vital

2. Examples = psychology, psychoanalysis
Root = psych(o)
Meaning = mind, spirit
Examples = psychology, psychoanalysis

3. Examples = geophysics, terrain
Root = geo, terr
Meaning = earth
Examples = geophysics, terrain

4. Examples = astronomical, stellar
Root = astr(o), stell
Meaning = star
Examples = astronomical, stellar

5. Meaning = study of, science of
Root = (o)logy
Meaning = study of, science of
Examples = geology, astrology