What are the two key concepts for this section? Why should we care about the oceans? How are coastal waters and deeper ocean waters most often polluted? What causes algal blooms and what are their...

What are the two key concepts for this section? Why should we care about the oceans? How are coastal waters and deeper ocean waters most often polluted? What causes algal blooms and what are their harmful effects? Describe an ocean garbage patch and explain how it can harm marine life and humans. How serious is oil pollution of the oceans? What are its effects and what can be done to reduce such pollution? Describe the 2010 BP Deepwater Horizon oil well blowout and its causes and effects. How might such accidents be prevented in the future?