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Inglés, Reading

8° Básico

What you should know about climate change

We learned what climate change is and what its consequences are.

In the seventh chapter of our collection we learned what climate change is and what its consequences are.

Global change and Climate Change

– The concept of climate change refers to a wide range of phenomena, including transformations that are produced almost at the same time around the whole planet.  Among these are: the increase in the concentration of greenhouse gasses, the increase in sea level, acid rain, the destruction of the ozone layer, and others.
– Climate change is caused principally by the increase in the concentration of greenhouse gasses.

Greenhouse effect, acid rain and the ozone layer

– The greenhouse effect is a natural phenomenon generated by greenhouse gasses that absorb radiation emitted from the surface of the planet, preventing its release towards outer space.
– Greenhouse gasses are present in the atmosphere and among the most important are: carbon dioxide, methane, nitrous oxide, chlorofluorocarbons, the ozone and water vapor.
– Acid rain is generally formed in the high clouds, where sulfur and nitrogen oxide react with atmospheric humidity and are converted into sulfuric and nitric acid.
– The hole in the ozone layer is produced principally by the excessive use of chlorofluorocarbons (CFCs), a gas produced by man.

Measures being taken in regards to climate change and its effects in Chile

– The Kyoto Protocol establishes a commitment to lowering or not increasing greenhouse gas emissions, principally in industrialized countries.
– The Montreal Protocol was developed to protect the ozone layer, controlling the production and emission of substances responsible for its destruction.
– The principal alterations produced by climate change in Chile would be: variation in precipitation levels, receding of glaciers, the increase in sea level and changes in vegetation.