Answer:
a.tinh do cung k1 va k2 bhsj nshsvsg sjjejsjjsj
Answer:
the soild material is allowe to settle into a sludge layer the remaining waste water undergoes a secondart treatment that uses bacteria to break down organic matter
treat water is left to sit while particles settle out, with settle d particles being added to sluudge,
water is disinfeted
Explanation:
Vinyl records because it’s not a secure information storage