Hledejte v chronologicky řazené databázi studijních materiálů (starší / novější příspěvky).

Our Environment

(environmental problems, their causes and results, possible solutions, public awareness, how to become more environmentally aware)

1) Environmental problems
•    the environment: flora, fauna, the water, the air, the earth
•    air pollution
o    all beings share the air, only people pollute
o    exhaust produced by cars, buses, trucks, motorcycles, aeroplanes
o    exhaust trapped in cities due to wind currents
o    heavy industry – some factories emit SO2 (sulphur dioxide), spread by wind
o    acid rains caused by mixing of SO2 with rainwater, pollutes the water and the soil (půda)
•    ground and water pollution
o    acid rains make trees grow slowly, get old quickly, then die
o    absence of efficient cleaning system in many factories
o    conventional agriculture (chemical fertilisers [frtilajzrs] (hnojiva))
o    chemical based cleaning products in household (cleaning machines for villages above 1000 inhabitants)
•    the hole in the ozone layer
o    ozone layer – filter for the sun
o    increase of skin cancer due to damage of this layer
o    changes in global weather
o    caused by industrial and technological way of life of 20th century (CFCs – Freon, CO2)
o    in Czech Republic the worst during January and February
o    ozone on the ground level (diseases, asthma, corrosion of certain materials)
•    destruction of rainforests
o    Amazon rain forest provides half of the world’s production of oxygen, “lungs of the Earth”
o    destructed by acid rains, air pollution and people (firewood, building materials, ground)
o    if we lose tropical forests: more difficult to breathe, temperature will rise (because of CO2), icecaps at the North and South Poles will melt, sea level will rise, flooding
•    ecological catastrophes (oil tanker accidents, Spolana Neratovice, Chernobyl 1986)
•    noise (problem of big cities)

2) Actions, which should be taken
•    separate and recycle the trash, specialised dustbins (bio, paper, glass, plastic, metals; also in our scool)
•    don’t waste water (showers instead of baths)
•    don’t waste electricity (switch off unused lights, radio, PC etc.)
•    recycle used batteries, fridges, electronics (TV, radios)
•    bike when possible or use public transport, underground; catch parking fields in big cities
•    use unleaded [anledid] petrol, buy a car with catalysator
•    avoid using washing powders with dangerous chemicals
•    don’t throw the waste in nature
•    London in sixties – installation of cleaning machines to chimneys in every household

3) The environment
•    ecology = science concerned with protection of the environment; at school ecological education
•    alternative sources of energy: solar, water, wind, geothermal (in CR: two nuclear power plants, thermal plants, water plants on dams)
•    environmental organisation Greenpeace (fights against pollution and nuclear power plants)
•    animal and plant protection, save the balance of species affected by human activities (bears, wolfs, mushrooms)
•    establishment of national parks and nature reserves, provide protection and opportunities for outdoor recreation
•    national parks Sumava, Krnap (Giant Mountains), reservation Mohelno steppe

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