Referát sa zaoberá environmentálnymi problémami našej planéty, najmä znečistením vzduchu, vody a pôdy, ako aj globálnym otepľovaním a jeho následkami. Upozorňuje na zodpovednosť ľudí za ochranu prírody a potrebu recyklácie a využívania obnoviteľných zdrojov energie.
- Zem je 3. planéta od Slnka, vhodná pre život.
- Ľudské aktivity produkujú odpad a znečisťujú prírodu.
- Znečistenie vzduchu vedie k skleníkovému efektu a globálnemu otepľovaniu.
- Destrukcia dažďových pralesov má devastujúci dopad na atmosféru.
- Ozonová vrstva je ohrozená freónmi, čo zvyšuje riziko UV žiarenia.
- Recyklácia a využívanie obnoviteľných zdrojov energie sú nevyhnutné pre budúcnosť.
anglictina/enviromental-problems/" class="wiki-link" title="Viac o: enviromental problems">Enviromental problems
Our planet, named Earth, is the 3rd planet from the Sun in our solar system. This fact makes it suitable for life. There is neither too hot nor too cold. The water is liquid, the air is proper for breathing and the soil is fit for breeding. We are living together on this Green planet, so we are responsible what is here happening. As I said there are four basic things for life: the air, the water, the soil and the Sun. The paradox is that people pollute them, althought all living beings share them.
Almost all human´s activities produce some waste. People want bigger houses, better cars, enough food and a lot of entertainment and animals, forests, fish, the whole nature have to pay for it. Cars, aircraft, big power plants, factories and all branch of tobacco-industry/" class="wiki-link" title="Viac o: industry">industry produce exhaust: carbon dioxide, nitrates or CFC´s. Carbonic gas causes the effect/" class="wiki-link" title="Viac o: greenhouse effect">Greenhouse effect and it leads to global warming. If the average temperature rises up by several degrees, the icebergs will melt and the sea levels will move up by 5 metres or more. The huge areas will be flooded and millions of people will lose their home. The higher temperature will surely kill micro plankton in our oceans that is producing one third of all oxygen. But people do not care about these problems. They are blind and deaf. For example in Brazil local inhabitants burn down the Rain forest and every year they destroy an area as big as France. If they burn down the whole forest 25mld of tons of carbon dioxide will go to the atmosphere and the impact will be devastating.
Our atmosphere is full of noxious gases, but people continue producing them. One of the biggest problems is our ozon hole. Ozon layer protects us from the direct ultra violet radiation that could kill all kinds of life. Freons, produced by humans, decimate the ozon layer and leads to a big danger. We are making millions of new products, but the old things we put into dumps. We should recycle everything, because we won´t have enough materials in the future. At the moment 94% of world´s energy comes from fossil fuels, but in twenty years there will be neither oil nor coal. We have other possibilities such as solar, wind or water energy, but it is too expensive. We should improve our lifes and start to behave a bit different way. The way we can go together with our nature.
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Aké sú hlavné príčiny environmentálnych problémov?
Hlavné príčiny zahŕňajú znečistenie spôsobené priemyselnou činnosťou, odpad z domácností a nadmerné využívanie fosílnych palív.
Prečo je dôležité chrániť ozonovú vrstvu?
Ozonová vrstva chráni život na Zemi pred škodlivým UV žiarením, ktoré môže spôsobiť vážne zdravotné problémy a poškodiť ekosystémy.
Aké alternatívy k fosílnym palivám sú k dispozícii?
Alternatívy zahŕňajú solárnu, veternú a vodnú energiu, ktoré sú ekologickejšie, ale momentálne sú nákladnejšie.