EnvironmentOnline version Put the words into the right group by Carla Branha 1 Natural disasters 2 Man-made disasters 3 Causes of Pollution 4 Effects on the environment storm earthquake hurricane tornado volcanic eruption flood drought tsunami deforestation animal extinction climate change global warming CO2 (carbon dioxide) car exhaust fumes waste toxic waste chemicals fertilizers pesticides temperature rise higher sea levels ozone layer depletion greenhouse effect