A. summarizing, this would be the best way to help make sure she was comprehending the article
Answer:
left
Explanation:
Because its the past tense.
Hope this helps:)
Answer:
It is recommended to use test strips when using the Quat solution because it doesn't always come in the right concentration.
Test strips help to check this. Sometimes, the water with which the solution is being diluted already contains other chemicals which can enervate the potency of the quat. Other times, the Quat itself comes as an already weaken solutions.
Cheers!
