Ocean Acidification | EARTH 103: Earth in the Future. Background Increasing levels of CO2 in the atmosphere are slowly causing the surface of the ocean to become more acidic. This is because the ocean absorbs some of the CO2, forming a weak carbonic acid. At present, the ocean absorbs about a third of fossil fuel emissions, but this amount is likely to increase to 90% in the future. Over the last century, the average pH of the ocean has decreased, and there are hints that the current levels are beginning to impact organisms that make their shells out of the minerals aragonite and calcite (both composed of CaCO3). Changes in atmospheric CO2 and consequences on the oceans. The following video provides a thorough overview of the potential impact of acidification on the oceans.
Chemistry 101 The ocean contains a massive reservoir of dissolved CO2, hundreds of times more than in the atmosphere, and, actually, by contrast, the amount derived from fossil fuel burning is relatively modest. CO2 (aq) + H2O = H2CO3 = H+ + HCO3- = 2 H+ + CO32- 1. Introduction to Climate Change | Climate Change Education | Stanford University.
A Disappearing Planet. Given the natural extinction rate, we would not expect more than one mammal species go extinct per century. However according to the scientists, 1,469 are currently in danger of extinction in that time. Primates are highly at risk, especially the lemur family. Rhinos, bears, and big cats are also in trouble. According to the natural extinction rate, we should not see more than one reptile extinction per century. However, 1,163 are currently at risk for extinction in that time. Especially endangered groups include the order of turtles, as well as the chameleon and iguana families.
According to the natural extinction rate, we should not see more than one amphibian extinction per century. According to the natural extinction rate, we should not see more than one bird extinction per century. Climatestewards2011 [licensed for non-commercial use only] The Lorax - Teaching Children Philosophy. Author: Dr. Seuss Publisher: Random House Summary by jayme johnson The Lorax has gone. Guidelines for Philosophical Discussion The Lorax , by Dr. One underlying message contained within the Lorax that is a good source of philosophical discussion is the idea of the interconnectedness of the things that live in an ecosystem. Answers to many of the questions about our social responsibility to the ecosystem seem currently to be driven by the notion of sustainability .
So far the discussion has been geared to the idea of social responsibility , but we can also ask about what the nature of social responsibility itself is. One final interesting philosophical topic that gets raised in the Lorax might be called the intrinsic value argument for environmental preservation . Questions for Philosophical Discussion The Lorax tries to speak for the trees. When the Lorax first appears to speak on behalf of the tress, the Once-ler claims he is doing no harm by cutting down Truffula Trees to make Thneeds.
Oceans and Sea Life. EE Resources. ES Blogs. ES Texts and Supplementals. WCS.org - Wildlife Conservation Society. Environmental Lesson Plans. APES. Clean Coal Technology fact or fiction. Many politicians are touting clean coal technology as a viable fuel source. There is a rising chorus of people from science, alternative energy businesses and industry who dispute these assertions.
In the United States, we burn coal to make electricity. The emissions are waste from burning coal that have already had many negative consequences including: several kinds of local air pollution, air pollution drift, forest destruction by acid rain, mercury pollution of waters and the problematic disposal of toxic fly ash. Investigate the concept of clean coal.
Listen to the University of Michigan's The Environment Reports: Coal: Dirty Past, Hazy Future - Part 1 | Part 2 | Part 3 | Part 4 | Part 5 What is clean coal technology? Discover - You use electricity every day. Where is your electricity generated? Explore the concept of clean coal. Identify the positives and negatives of clean coal technology. T. Alternative thinking: Extensions: Show what you know Careers for the future: , Symbol, Education.