1. Výukový materiál EK 01 - 23 Tvůrce: Ing. Marie Jiráková Tvůrce anglické verze: Mgr. Milan Smejkal Projekt: S anglickým jazykem do dalších předmětů Registrační číslo: CZ.1.07/1.1.36/03.0005 Tento projekt je spolufinancován ESF a SR ČR

2.  The sun rays fall on the Earth  Some of them will be reflected from the atmosphere, while others pass through it  They hit the Earth's surface and are reflected  Most rays are absorbed by the Earth's surface=> The Earth is warmed  => global warming

3.  Melting of alpine and polar glaciers  Increases in the level of the world oceans  Changes in climate processes - precipitations

4.  Ozone layer:  A part of the atmosphere  It protects the Earth from the UV radiation impact  UV radiation:  Dangerous  It blocks photosynthesis, damages plant and animal tissues, threatens human health

5.  There is only a little of ozone. To be gathered on the Earth´s surface it would be a layer of 3 mm  The layer is disrupted:  Flying meteorites through the atmosphere  Solar storms  Volcanic eruptions  Testing of nuclear weapons  Freons  Aircraft flying at higher layers

6.  A hole in the ozone layer :  Depletion of the ozone layer  Especially over the Antarctic and large cities  UV radiation penetrates to a large extent  => Conventions about the protection of the ozone layer as Vienna Agreement

7.  Previously, the spring and pumped water was better than today  Many springs and underground water supplies are currently polluted

8. Contamination is caused by :  Human activities above all :  Wastewater  Leaking from soils into groundwater  Accidents with dangerous liquids Contamination of groundwater is a long-term fact

9.  The continuous inflow of polluted water from rivers  Wastewater in the seas  Radioactive waste  Accidents involving tankers => extensive coastal ecological disasters

10. Wastewater treatment  For a long time we did not deal with it and relied on self-cleaning water power  The deposition of sediment, algae consumption of the nutrients Controlled mechanisms :  Wastewater Treatment Plant  Cleaning the sewage lagoons

11.  Name the ecological problems of the mankind?  Why is global warming dangerous?  What causes the depletion of the ozone layer?  What is the greenhouse effect?  What are the methods of water cleaning?

12.  BRANIŠ, Martin. Základy ekologie a ochrany životního prostředí: učebnice pro střední školy. 3., aktualiz. vyd. Praha: Informatorium, 2004, 203 s. ISBN 80-733-3024-5.