The landscape at the very first signs of volcanic activity.
The same landscape after 1000 years of volcanic activity.
The same landscape after 10,000 years of volcanic activity.
The same landscape after 2 million years of volcanic activity.
Look at each of the labels.
Look at the top picture. Can you decide under which label the picture should go?
Drag each of the pictures and drop them below the label to which you think they belong.
A YELLOW border will appear around those which are under the correct label.