Tài liệu Hóa học vô cơ - Chủ đề: Oxygen Co-Emission

Oxygen Co-

Emission

By: Rocío M., Victoria D., Candela M. and Sol

• Rainforests are widelyu believed by laymen to

contribute a significant amount of the world's

oxygen, although it is now accepted by

scientists that rainforests contribute little

net oxygen to the atmosphere and

deforestation has only a minor effect on

atmospheric oxygen levels.

• However, the incineration and burning of

forest plants to clear land releases large

amounts of CO2, which contributes to global

warming.

• Scientists also state that tropical

deforestation releases 1.5 billion tons of

carbon each year into the atmosphere.

• Forests are also able to extract carbon

dioxide and pollutants from the air, thus

contributing to biosphere stability.

Carbon Emmission

• Every time we burn fossil fuels such as gas,

coal or oil, carbon dioxide is released into the

atmosphere. In a natural carbon cycle, carbon

dioxide is re-absorbed by plants and trees.

However, we are burning fuels where the

carbon dioxide has been trapped under the

earth's surface for millions of years, and we're

doing it so quickly that plants and trees that are

alive now have no chance of soaking it up

• The effect of all this extra carbon dioxide in the

atmosphere is that the overall temperature of

the planet is increasing (global warming).

Whilst the average global temperature is

increasing, on a day-to-day level the climate is

changing in unpredictable ways. To try and

reduce the risk of ever more extreme weather,

we need to reduce how much fossil fuel we are

burning. This isn't easy

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