ACTIVITY 1/ prensa y matematicas

A BRIEF STORY OF CLIMATE CHANGE

1.-Explain, briefly, what Greenhouse effect gases are and how they produce climate change.
They are named gases of effect invernader to the gases which presence in the atmosphere contributes to the greenhouse effect.
They produce the warming of the Earth since they stop to spend the solar radiations (both light and caloric) and on having bounced agains the surface, the caloric radiation returns to go the space but he can´t since the greenhouse gases don´t leave here.

2.-What kind of fossil fuels can you name?
FOSSILS FUELS: Petroleum, Coal and Natural gas

3.-In what year did carbon emissions reach one billion tonnes per year?
In 1927

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

5.-Reckon when 7 billion world inhabitants will be reached
Between 2020 and 2025 will be reach 7 billions word 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?
30% per year, more or less.

7.-What was the warmest year on record?
The warmest year was 2007, because we produced many pollution

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 as us we live in a city with so many industries and we didn´t learn to live without pollution.
We try to reduce but it not sufficient and we get lost a society without pollution.

9.-Define Gross Domestic Product (GDP)
GDP is the economic results of a country, his values on the market and the benefits that they obtain.

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.
I think that it's better to pay a 1 % now because this way we save ourselves the need to have to pay 20 %.