From Pollution you know smokes
Do you have a picture of the map?
Meiosis is a process used to create an identical daughter cell
First of all the reason the graph would be a curve is because, as the time increases the position changes, at first the ball is at a certain point then it starts rolling off a cliff so its moving foward and then the ball starts falling, (If too confusing here is a image http://www.mazzworld.net/U11Image1.gif)