Please help i don't understand

Please Help I Don't Understand

Answers

Answer 1

Answer:

1. According to Science.org, "Roman concrete consisted of a mixture of a white powder known as slaked lime, small particles and rock fragments called tephra ejected by volcanic eruptions, and water."

2. Arches and concrete

Answer 2

Answer:what does it say when you click them we won't know unless we can see?

Explanation:


Related Questions

Need help please I can't fail it

Answers

Answer:

B?

Explanation:

i'm sorry if you get it wrong

The other guy is wrong. I am a proffesional teacher at Cambridge and the answer is C.

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