YHS: Honors Biology

Unit 9: Exchanging Materials w/ Environment

Cell Size / Surface Area:Volume

Cell Membrane

Cell Transport

Ocean Acidification Application

How Carbon Dioxide Kills Ocean LifeWarming and acidification from carbon dioxide in our atmosphere are having long-term effects on life in our oceans. In this video from Earth Vision Trust, marine ecologist and geologist Joanie Kleypas explains the processes behind coral die-off. The Short Film Showcase spotlights exceptional short videos created by filmmakers from around the web and selected by National Geographic editors. The filmmakers created the content presented, and the opinions expressed are their own, not those of National Geographic Partners.

What Is Ocean Acidification? | PBS LearningMediaExplore how atmospheric pollution affects the chemistry of the world's oceans in this video from NOVA: Lethal Seas. The burning of fossil fuels releases carbon dioxide into the atmosphere, some of which is absorbed into the oceans. Animations illustrate how CO2 reacts with water to form carbonic acid, which releases hydrogen ions and increases the water's acidity. Over the last 40 years, average ocean acidity has increased about 5% every decade and such changes in ocean chemistry affects living things. For example, ocean acidification reduces the availability of carbonate, which is necessary for the formation of shells for creatures, such as oysters.

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