ENV250Y5 Lecture Notes - Lecture 39: Ecosystem Services, Persistent Organic Pollutant, P.M. News
Document Summary
Prairie grasslands one of the most endangered in the world. Less than 20% of grasslands remain in sk (last study in 1996) Nature conservancy of canada - going to conserve 3000 acres of native prairie land. Gutting epa - taking money for them making it hard for them to function. Celebrating 150th from sea to sea to sea. We"re launching a ice breaker carrying 60 people. Ozone depletion (nothing to do with climate change) Shield that protects us from suns ultra violent rays. There"s a hole in it letting rays through. First un ratified agreement - we got together and addresses halogens. 1985 vienna convention for the protection of the ozone layer. 1987 montreal protocol on substances that deplete the ozone layer. Eliminate global consumption and production of ozone-depleting substances. Canada plays a huge role - it worked, we stabilized the depletion. This case cannot serve as a model of more complex problems like biodiversity and climate change.
