"Issues of the environment are the biggest global problem, I think, because these problems don’t concern only humanity but also the whole Earth. The atmosphere, the hydrosphere, the lithosphere and the biosphere have been in balance for millions of years on the Earth. These four parts make up what we call the Earth's environment. Four million years ago, humans first walked on the Earth's surface and soon began to change the balance of the environment in their favour.
Global warming The Earth has a thin atmosphere that is like a transparent blanket that keeps us warm. In a process called the greenhouse effect, high-energy radiation from the Sun is trapped by gases such as carbon dioxide or water vapour. This heat energy keeps Earth temperatures too high to support life. It’s a natural phenomenon and without it the Earth would be too cold for any life. Problem is that carbon fossil fuels such as coal burnt to produce energy produce large amounts of carbon dioxide. The greenhouse effect deepens and it causes a global warming. The global warming means that the Earth's overall temperature is increasing. Scientists say the temperature of the Earth could rise by 3°C over the next fifty years. This cause melting of ice caps at the North and South Poles and rising sea levels, unpredictable weather in the form of flooding or drought, hurricanes and large loss of life."

Gymnázium Jiřího z Poděbrad, Poděbrady, Studentská 166, Poděbrady

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