No, they are different operating systems.
Windows 7 is an OS for computers. But if you mean windows 7 the new phone OS then i would have to say android. There are thousands of apps you can buy (and still hundreds that are free)
Yes, it is possible to install Android OS into a desktop, but it will require modification on the user's part. However, there are all-in-one (AIO) computers where it runs Android OS, and one that can toggle between Android and Windows OS.
The Galaxy Tab runs Android OS. You may find apps on Android from Windows Mobile, but while Android runs the Linux Kernel, Windows Mobile is on Windows CE. These bases are way different, so no. Why would you expect Android to be compatible with such and outdated OS as Windows Mobile.
android is good but not the best , ios is the worlds most advance os.
The Huawei E1756C supports only Mac and Windows OS.
If the file for flappy bird is compatible to be installed on the android OS, it can be moved between any android device.
No, Nokia only use Symbian and Windows phone.
The HTC One is already available to Verizon, and comes in the different variants (stock Android OS, Android OS with Sense, Windows).
Desktop MS Office is not available for Android OS. However, Microsoft has come out with Microsoft Office Mobile for all mobile operating systems, including Android OS.
There are some developers that have made an emulator of Palm OS to run on an Android phone. StyleTap is one such emulator, which also allows you to run Palm OS apps. It is available for any platform (Android, iOS, Windows).
I assume you mean Android? Android is an operating system much like ios for Apple and windows for windows devices. Android is the most open source OS out if the above mentioned Operating Systems :)
Can you use Windows apps on IOS? NO! Same for the Pre. it's WebOS. not Android OS!