What is google earth pro license key?

Buy it. Google will give you. :)|||Everybody interested to download Google-Earth can do so and enjoy the software freely. If you are more interested and want to use the Google-Earth in your profession or want to study in more detail you have to pay an amount and download the professional version which will be more detailed and give more options to utilise the software like taking printed copies and study in a professional manner. Once you pay the required amount you will get a licence key/password to utilise the same for your detailed study.