... to decompose, and so, they last for a very long time. The water spreads out the PCBs in the ocean, but when sea life comes along these particles attach themselves to the sea creatures, and slowly collect. In Environmental Issues in Oceanography, Second edition the authors [Daniel C. Abel and Robert L. McConnell] state that ... the reproductive and central nervous systems, bone structure, and the liver bile duct of mammals. TBT compounds can also damage the immune system." In sea life specifically, the Extension Toxicology Network states "Tributyltin compounds are highly to very highly t...

• Word Count: 1422
• Approx Pages: 6
• Grade Level: High School

... extinct. The largest oil spill to occur was when the Exxon Valdez went aground and covered 4,800 square miles in Prince William Sound, Alaska. This spill killed 35,000 sea birds, 10,000 otters, and at least nine whales. The spill left pools of oil up to three feet on some beaches. In December of 1989, an Iranian tanker leaked 70,000 ... ...

• Word Count: 912
• Approx Pages: 4
• Grade Level: High School