Answer:
sarcasm , difficult
Explanation:
Sarcasm make it difficult to classify online content as positive ,negative or neutral because sarcasm content had many meaning and it involve some humor also which make it difficult weather to classify as positive or negative or neutral.
Persuading people they need your service/ product would be valuable to you
Answer:
The redo function <u>restores </u>any actions that have been previously undone using an undo. Undo is a function performed to <u>reverse</u> the action of an earlier action.
A chemical that can harm ones body
Its Track Changes, I guess.
Thank You!