actividades de matemáticas

A BRIEF HISTORY OF CLIMATE CHANGE

1.Explain, briefly, what Greenhouse effect gases are and how the produce climate change.
The Greenhouse effect is made up do the that constribute to climate change like Co2, water
vapour and certain other gases.

2.What kind or fossil fuels can you name?
Coal, natural gas, petrols...

3. In what year did carbon emissions reach one billion tonnes per year?
In 1907.

4.Express in a chart (time, population) the world’s population growth since 1800.

5.-Reckon when 7 billion world inhabitants will be reached.

More or less, in 2020 will be reach 7 billions world in habitants.

6.-According to the chart in the text that shows the increase in CO2 concentration in the atmosphere since 1960, what is the percentage growth that has been produced in each decade?

32% each year.

7.-What was the warmest year on record?

2007.

8.-In the Kyoto protocol, it was agreed that developed countries would reduce their emissions by an average of 5% in the period from 2008-2012. Do you think it has been meeting its target?

I think that we should be realists, all these countries are typing reduce the pollution emissions gases but we don't get it because we contaminate more and more.

9.-Define Gross Domestic Product (GDP).

The Groos Domestic Product is the market value of all final goods and services made in a country in a period of time.

10.-The Stern Review concludes that climate change could damage global GDP by up to 20% if left unchecked - but curbing it would cost about 1% of global GDP. Explain how this statement is justified.

That means: it's better pay now only 1% of global GDP that pay the 20% in the future for curbing the climate change. If everybody pay the 1%, we can curbin the climate change and not pay the 20% because that means a lot of money.