Well theres nothing really wrong with it. Maybe in certain places it can be questionable. But it's their bodies so whatever they want to do with it is their choice really.
Answer: Age
Explanation: Age always goes up, but doesn't go down.
You should give credit to them, yes. You can state the source from which it came from, or the author himself. I’m going to say this is true
Answer:
A quote sandwich is a method that aids you in effectively adding quotes.
Top slice: Introducing the Quotation.
Meat & veggies: The Quote.
Bottom slice: Explaining the Quotation.
Its basically statingg how you should explain and show the quote in that order.
Example :
Top Slice -
According to .......
In the text it states ......
Meat and veggies -
(Write down the quote)
Bottom Slice -
This quote means....
This is stating........