The invention of _____ led to the understanding of the development of science in antiquity.

A. clay tablets

B. graphics

C. reading

D. writing

For evidence of things, the first (earlier) Greek philosophers dwelt on the use of rational _____

A. debate

B. disputes

C. knowledge

D. speculation

Leucippus and Democritus regarded the universe as having resulted from mechanical sorting of _____

A. atoms

B. elements

C. molecules

D. roots

Plato identified five elements:(fire, earth, air, _____, and cosmos) as the material cause of things. ie the fundamental stuff of things.

A. water

B. light

C. sun

D. void