Sewage treatment that provides water purification using physical settling of large particles is best defined as Secondary treatment Primary treatment
Both primary and secondary treatment Tertiary treatment​

What must happen before a body cell can begin mitotic cell division

The boiling point of propanoic acid is higher than that of 1-butanol because: propanoic acid has a higher molecular weight than 1-butanol. propanoic acid is more soluble in water than 1-butanol. propanoic acid is a better hydrogen bond donor than 1-butanol. propanoic acid forms hydrogen bonded dimers and 1-butanol does not. 1-butanol forms hydrogen bonded dimers and propanoic acid does not.

Adepositional also feature that forms where a stream enters a lake or an ocean is a