The study of life.
Biology.
graph
graphic
autograph
'mark, write, written'
mom
dad
phonics
symphony
telephone
'voice, sound, vocal sound'
The study of the Earth, including rocks and volcanoes.
Geology.
geode
geometry
geology
'earth'
one
many
chronic
synchronize
chronological'time'
The study of the stars and their influence on people.
Astrology.
thermal
thermometer
hypothermia
'warm(th), hot, heat'
monosyllable
polysyllable
hydrant
hydrate
hydrogen
'water'
The study of animal life specifically.
Zoology.
autism
automobile
autobiography
'self'
democratic
autocratic
monarch
monocle
monotonous
The study of ancestry and bloodlines.
Geneaology.
photon
photosensitive
photograph
'light'
patriarch
matriarch
psychiatrist
pediatrician
podiatrist
'healer, physician'