G-H

Question 1

bigamy, polygamy

Answer 1

Gamos (wedding, marriage)

Question 2

geography, geology, geometry

Answer 2

Ge (earth)

Question 3

cosmogony, cyanogen, genealogy, genesis, genetic, heterogeneous, homogeneous, hydrogen, nitrogen, oxygen

Answer 3

Genos, gon- (race, offspring, kind)

Question 4

diagnose, physiognomy, prognostic

Answer 4

Gignosko, gno- (to come to know, recognize)

Question 5

autograph, bibliography, biography, diagram, engraft, epigram, geography, glamorous, graft, grammar, gramophone, graph, kilogram, orthography, paragraph, photograph, telegram

Answer 5

Grapho, gram- (to draw, write, describe)

Question 6

heterodox, heterogeneous

Answer 6

Heteros (the other, different)

Question 7

chair, cathedral, chaise, shay

Answer 7

Hezomai, hed- (to sit)

Question 8

hippodrome, hippopotamus

Answer 8

Hippos (horse)

Question 9

apostasy, ecstasy, rheostat, stadium, static, system

Answer 9

Histemi, sta-, ste- (to stand, to make to stand)

Question 10

electrode, episode, exodus, method, period, synod

Answer 10

Hodos (road, way)

Question 11

anomalous, homily, homogeneous

Answer 11

Homos (one and the same)

Question 12

carbohydrate, dropsy, formaldehyde, hydra, hydrangea, hydrant, hyrdraulic, hydrochloric, hydrogen

Answer 12

Hydor (water)