SAO, Río Negro, CEM Nº 29

2. Climate change is the greatest
environmental threat facing the planet.
Since the industrial revolution to today,
the burning of fossil fuels (oil, coal and
gas), which are used to produce energy,
releases greenhouse gases (CO2) into
the atmosphere, increasing the
temperature of the Earth and causing a
distortion in the global climate system.

3. Humanity stands at a historic
crossroads. Scientists warn that if
global temperatures above 2 ° C
will have catastrophic
consequences. If we cross this
threshold, the economic, social,
political, cultural and
environmental seriously hurt all
regions of the world.

4. , CAUSES
Thanks to the presence in the atmosphere of CO2
and other gases responsible for the greenhouse
effect of solar radiation that reaches the Earth is
held in the atmosphere. As a result of this heat
retention, the average temperature on the Earth's
surface reaches about 60 ° F, which is conducive to
the development of life on the planet. However, as
a result of burning fossil fuels and other human
activities associated with the process of
industrialization,

5. the concentration of these gases in the
atmosphere has increased considerably
in recent years. This has caused the
atmosphere to retain more heat than it
should, and is the cause of what we
know today as warming or global
climate change.

8. Consequences
* Melting of glaciers and other ice masses
worldwide permanent (threatening
situation the most important freshwater
reserves in the world and that will cause the
sea level rise)
* Increased heat waves, floods and droughts
* Expansion of diseases
* Collapse of many ecosystems