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John Cabot
A structural formula represents the molecule graphically, whereas the other does not.
I'm not sure if you mean control the trains that only the computer can drive, (like the 30000 EXE, royal scot or empire builder) cause you can never do that. (to my knowledge) In explore mode, there are no other trains; it's like I am legend. But of course the signals still work.
Because they would explore more.
There was not any other explorer.
yes they did
The primary languages are HTML, CSS and JavaScript. HTML is the markup used to structure your content. CSS is used to make the structure pretty. JavaScript is used to make the pretty structure do neat things. There are a bunch of other languages like PHP, ASP, JSP that work with MySQL or other databases...
they did not know of any other land except for europe and had no reason to explore any land other than europe.
Explore other planets
yes
study explore the subject (in context)
You can explore other levels nothing else.