Answer:
- don't echo sound and don't create a reverb
also, these walls are designed to maintain a uniform pitch and amplitude in every corner of room
I believe the basement is the best answer
Hope this helps!
Oxidation - the breakdown of rock by oxygen and water, often giving iron-rich rocks a rusty-coloured weathered surface.
I believe the answer is E. d41 because it goes a11, A12, b21, B22, c31, C32, then it goes lowercase d41 and then the next one is going to upper case D42.
Hope this helps.