Question

Q. how is concrete made?
Ans.
a)concrete is made by mixing cement ,water ,sand and stones in a cement mixer.
b)cement ,water ,sand and stones are mixed in a cement mixer to make concrete.
which one is correct
whoevr gives the right answr i will mark it brainliest ​

Answer 1

Answer:

concrete is small parts of rocks

Explanation:

it can be made naturally or scientifically

Naturally--it is made up by weathering of rocks

scientifically--By the help of different machines.

Answer 2

Answer:

option b is correct

Explanation:

as they use sand and also stone particles