Answer:
Wikipedia
Explanation:
Most people go to other websites because they don't like to read the articles, they just want the information now, but Wikipedia has some of the most detailed articles on information to do with anything, and it's free to use.
Answer: dynamically modified model
Explanation: Well the first one was Plankalkül, but it wasn't implemented untill 1998. But the first to be actually used was Short Code.
Yes, number 1 is correct
The answer should be optics...