How much of the land surface of the world is arid (desert) or semi-arid?
Correct answer: 33%
Centenarian
808stevan1, Keep going. I have 120,000
ChewyGazelle68623
JezzerLX, I got it wrong to!! oh well it's just a game and a damn good one!! I play it every day and I learn so much!! The trick of it is, when you run out of lives, you either buy them or keep waiting. for 4 minutes sometimes. Tonight I bought the 24 hour package for $5.99. That's a real reasonable price, especially , if you are an addict like me!! GOOD LUCK!!