Animal cells are inside of animals that are heterotrophs, meaning they need to consume their food unlike plants which use their cells to create food. Plants are autotrophs meaning they create their own food.
Because milk is a thing, Nouns are person places and things
Treat others how you would like to be treated. This moral behavior is an overall generalization of how a person should conduct one's self in public and in private. If people were to conduct themselves as such we wouldn't have so many misunderstandings and intolerable people. Especially in this political climate being able to have civil discourse is a touchy subject to communicate with someone else on the polar opposite of the spectrum.
The Answer is LOTO. LOTO stands for Lock out/Tag out. When preforming maintenance or repair on machinery it is important to use LOTO or Lock out/Tag out to insure that no one uses the machinery while it is under repair/maintenance. This is important because using a machine while under repair or maintenance could result in serious injury or even death.
Arnold is trying to understand the disagreement that occurs between Mr. and Mrs. Van Daan with regards the Mrs. Van Daan's fur coat. Which identifies the most useful question for Arnold to ask?