Question

solid like human feaces settle at the bottom of the tank are called? pls answer i am writing exam​

Answer 1

Answer:

Solids like faeces settle at the bottom and are removed with a scraper. This is the sludge. A skimmer removes the floatable solids like oil and grease.

Explanation:

please don't copy from next time....

Answer 2

Answer:

very good morning yrr fine,,,

wbu??