prefectural (institution)
75294
nature / spontaneity
93582
museum
142529
methane
39906
sulfuration / sulphuration
165769
hydrogen
110118
living / life (one's daily existence) / livelihood
112435
chemistry
53829
synthesis / composition / synthetic / composite / mixed / combined / compound
83610
group (of living things) / crowd / community
72087
ancient times
77392
shell / shellfish
58363
fossil / petrifaction / fossilization / fossilisation
53918
town / block / neighbourhood / neighborhood
128653
affirmation / confirmation / validation
59319
approximately / about
161126
10,000 / ten thousand
156842
10,000 / ten thousand
156842
ago / before (some event) / previously
117076
fossil / petrifaction / fossilization / fossilisation
53918
Honshu (largest of the four main islands of Japan)
156056
discovery / detection / finding
143538
chemistry
53829
synthesis / composition / synthetic / composite / mixed / combined / compound
83610
group (of living things) / crowd / community
72087
fossil / petrifaction / fossilization / fossilisation
53918
as (i.e. in the role of) / for (i.e. from the viewpoint of)
4274
the oldest
86257
fossil / petrifaction / fossilization / fossilisation
53918
study / research / investigation
75170
Honshu (largest of the four main islands of Japan)
156056
the oldest
86257
chemistry
53829
synthesis / composition / synthetic / composite / mixed / combined / compound
83610
group (of living things) / crowd / community
72087
fossil / petrifaction / fossilization / fossilisation
53918
love / adoration
44513
house (e.g. of Tokugawa) / family
54973
ago / before (some event) / previously
117076
discovery / detection / finding
143538