Books that are surrounded by oxygen will turn yellow, so basically, all books since oxygen is constantly surrounding us. Oxygen-rich conditions are very bad for paper, which gives them the yellow tiny. This is actually called lignin oxidation! Lignin oxidation gives it a yellow or brown colour as you said. Yellow comes first, then brown after.
I hope this helped a bit! :)
I am sure the answer is A.
Answer:
illustrates the assembly line principle of making things faster.
Explanation:
The assembly line principle illustrates the process in which the production is managed and the way it helps in the completion of the product. In this process the manufacturing process is broke up into simpler steps. The labor involved in the manufacturing of the product is divided.
In the given excerpt, fast food restaurants like Burger King, Pizza Hut and Mc Donald's presented their products like the factories. They adopt the method the assembly line for the purpose.
