3. Would you use a physical model or a conceptual model to describe the following: brain, mind, solar system, birth of universe, stranger, best friend, gold coin, dollar bill, car engine, virus, spread of sexually transmitted disease?

Answer 1

Anon... We need a little more that (3.) to help you.

Answer 2

If you're trying to copy and paste, it's clearly not working. You'll need to type in your question (and please make sure it's a question!) "the long way"!