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2. In the first image we see a bear over the snow.
In the other image we find the bear over a little iceberg.
This is due to the climate change.

3. In the left image we see a forest full of trees whith a lot of
species.
In the right image trees have been destroyed for the paper
fabrication.

4. In the first image we see a city without pollution.
In the other image there is a city with a lot of pollution.
This is due to the urban fumes.

5. In the first image we see the correct from of recycle.
In the other image we see all the rubbish in the same
container.