If you are accessing certain websites very often with your Android powered Samsung Galaxy S2, I suggest you to add a bookmark shortcut to your phones Home screen.
Mars is the most explored and well know planet so far, so you shouldn't have to much trouble knowing some of its facts. Go through this short quiz and build up you Dreevoo knowledge profile.
Scientist may be an expert in one or more areas of science. Some of them have decisively influenced on the development of mankind. Let see how many of them you know.
You don't need Photoshop or some other advanced piece of software to resize a large number of images at once. You can use Microsoft Office Picture Manager which is part of the Office suite.