What is a common-property resource? 

A)  an environmentally depleted resource not available for users 
B)  a resource owned by a group of private owners that is available for all owners 
C)  a resource that has a number of different uses and is available for all owners 
D)  no individuals own the resource, and it is available for all users

What was the cause of the Chernobyl nuclear disaster? 

A)  terrorist attack 
B)  record hurricane 
C)  poor design and human error 
D)  large earthquake