Which of the following ph numbers indicates a strong acid?
1
5
7
14

1

Explanation:

The pH scale goes from 0 to 14.  0 is the most acidic and 14 is the most basic so the middle, 7, is neither acidic or basic.  Anyway, thos most acidic rating is the lowest number, so here that's 1

bacteria could be both, harmful and to us. harmful bacteria could make us sick and probably even by getting the chances of getting a disease, but good bacteria fight it off with your immune system. there is always bacteria everywhere we go. we need to make sure to wash our hands after using the restroom, before eating, after eating, after petting an animal too. so you see, bacteria is everywhere and is harmful or . i hope this . : ) : ) : )

what are the options

explanation: