1.  Agenda: February 21 st, 2013  Warm-up: Describe how invasive species can be harmful to a native ecosystem. Give an example  Cornell Notes (pg. 27) ◦ How to Clean Up Oil Spills  Introduce Oil Spill Lab ◦ Work on pre-lab questions  Homework: Finish pre-lab questions (3 questions)

2. Usually, these ships are safe

3.  An oil rig exploded in the Gulf of Mexico  An estimated 210 million gallons of oil leaked into the Gulf over a 3 month period

7.  Basically a large float that surrounds the slick  As the boom is pulled into a boat, they can skim the oil off the top  The oil slick shrinks until it is completely cleaned up

10.  When detergent is sprayed on oil slicks, the oil breaks up into clumps which sink to the bottom of the ocean

11.  These bacteria eat oil slick as food  As they reproduce, they eat more and more oil  When slick is gone, their food source is used up and the bacteria die

12.  If a slick is small, it can sometimes be absorbed by special absorbent pads  Then, these pads can be removed from the surface of the water