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Home Q & A Board Humanities Art and Culture
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Hems271 Hems271
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6 years ago
Roman concrete was a mixture of
 
  a. water, tufa, travertine, and rubble.
  b. water, mortar, gravel, and rubble.
  c. stucco, plaster, water, mortar, and rubble.
  d. tufa, rubble, gravel, and mortar.
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19leekichang19leekichang
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6 years ago
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Hems271 Author
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6 years ago
Thanks
macbookpro1
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Yesterday
Thanks for your help!!
Shuqin
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2 hours ago
You make an excellent tutor!
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