The document discusses several topics related to climate change, including carbon dioxide (CO2) emissions, sustainability, recycling, and climate change itself. It notes that CO2 is a greenhouse gas released through breathing, combustion, and fermentation that is a major driver of climate change. The document also defines sustainability as maintaining biological diversity and productivity over time, and recycling as turning waste into new products or raw materials. It concludes that climate change, characterized by rising surface temperatures, is currently the most important environmental problem facing humanity.

1. OUR PLANET
IS
CHANGING

2. Index:
1. CO2 (carbon dioxide)
2. Carbon emission
3. Sustainability
4. Recycling
5. Climate changes

3. 1. CO2 (CARBON DIOXIDE)
CO2 (carbon dioxide) is an odorless and
colorless gas that is released in breathing,
combustion and in some fermentations.

4. 2. CARBON
EMISSION
Global emissions of
carbon dioxide (CO2). It
is one of the main
greenhouse gases and
a factor that drives
climate change

5. 3. SUSTAINABILITY
It refers to those biological systems that can preserve
diversity and productivity over time.

6. 4. RECYCLE
Recycling is a process
whose objective is to
turn waste into new
products or raw
materials for later use.

7. 5. Climate change
Climate change, also called global
warming, refers to the rise in surface
temperatures on Earth.
Nowadays, climate change is the most
important environmental problem facing
humanity.

8. THE END
By: Eva Rajadel - Mar Bastard - Patricia Rodríguez -
Clara Trilles.