The Dam Area

1. How do I blow up the dam?
   
2. How is the control panel operated?
   
3. What is the green bubble for?
   
4. What do I do with the object which looks like a tube of toothpaste?
   
5. What is the screwdriver for?
   
6. What do the buttons in the Maintenance Room do?
   
7. Can I stop the leak?
   
8. What is the pile of plastic good for?