The persuasive technique that is being used here is name-calling.
This means that this cereal company is using, usually fake news and no evidence to say bad things about the rival company, disregarding whether it is actually true or not. People will see this cereal ad and believe it, regardless of whether there are any evidence to prove the claims.
Hello. Unfortunately the texts your question refers to are not available and this makes it impossible for me to answer your question properly. However, I will try to help you as best I can.
To discover the message these two works share, you will need to read both texts. This message is the theme, the lesson that the author of the two texts wants to present to the reader. You can find this message by reading the texts and answering the question "What are these texts trying to teach me?"
Explanation:
windows are needed to be created for air to get from the outside of the building to the inside