Since tomorrow is Earth Day, posting a quiz.  If you have children it is a good way to alert them to conservation.  If you don't have children, take the quiz anyway - it's fun.

EARTH DAY QUIZ.
1.  What is an ecosystem?
a) It is a place having unique physical features—including air, water and land—supporting plant and animal life.
 
b) It's a process to name newly discovered plants and animals.
 
c) It's a popular computer game.