Global problems ut
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This document provides an overview of global problems and climate change. It discusses several issues related to climate change like global warming, ozone depletion, acid rain, increasing human population, and decreasing biodiversity. The document focuses on global warming and its consequences, including changing weather patterns, melting ice layers and glaciers, and extreme weather events. It also examines possible reasons for climate change such as solar activity, Earth's orbit and rotation, location of continents and oceans, albedo and greenhouse gases. Students are assigned group projects to research topics like the human causes of global warming, climate change consequences, and how individuals can help address the problem.
![Global problems, an overview Urmas Tokko, teacher of biology, Tartu Tamme Gymnasium [email_address]](https://image.slidesharecdn.com/globalproblemsut-100926092156-phpapp01/85/Global-problems-ut-1-320.jpg)
Global problems ut
- 1. Global problems, an overview Urmas Tokko, teacher of biology, Tartu Tamme Gymnasium [email_address]
- 2. What does it mean – global? Changes in biosphere or in large parts of it Connection between different changes Reasons, and expanding consequences Globalization – cultural and social processes; Cultural assimilation, economical unification
- 3. Some of them… Global warming (Greenhouse effect) Ozone hole (O 3 ), UV radiation Acid rains Starvation, lack of food and freshwater Increasing human population; poverty Decreasing biodiversity Desert enlargeing; Rainforest usage, erosion Garbage, wastewater, air pollution
- 4. Climate changes Mostly discussed as global warming and its consequences: rainy winters, drought summers decreasing and changing biodiversity migrant species melting icelayers, glaciers; extremal weather phenomena etc Long-term and short-term cycles should be taken into account
- 5. Possible reasons of climate changes Solar cycles (short and long term), activeness of the Sun Astronomical parametres of the Earth: axis of rotation, trajectory, etc Continent and ocean location and surface area Albedo – surface (radiation) reflection Aerosols – form volcanos or industry Greenhouse gases, human influence Ocean streams (i.e Golf) and -geochemistry
- 6. Tasks for student groups Find additional information about your topic: don’t forget the reliability of the source always indicate the author and exact source (web-address exactly) Compile a presentation or mind-map (or webpage, etc), consisting most important information, some illustrations (refer the source)!) and links. Dictionaries, for an example: http://www.annaabi.com/inglise-eesti/ http://dictionary.site.lv/ w o r k s h o p 1.
- 7. Student groupworks Global warming effect as a result of human activity (reasons, proofs) Global warming as a natural/normal process (reasons, proofs) Climate changes’ consequences (globally, locally in Estonia and Latvia) Climate changes’ influence to biodiversity (incl. migrant species) Climate refugees (meaning, examples, reasons, consequences, etc) w o r k s h o p 1.
- 8. Student groupworks 6. Estonian and Latvian world-wide contribution to solve Climate change problems (what have been or should be done) 7. Estonian and Latvian main “contribution” to climate change (main environmental problems, pollution) 8. Think globally, act locally – what can I do to relieve (“soften”) climate change? w o r k s h o p 1.