The scene takes place in a field.
We can see a grove in the background.
A cow and a sheep are grazing peacefully.
The cow can't help farting and she feels embarrassed.
The farts are so powerful that she takes off like a plane and flies in the sky.
If we keep raising cattle, greenhouse effect will be more and more important.
In the developing world,people eat about 30 kilograms of meat a year.
In the industrial world, people eat more than 80 kilograms of meat a year.
We shouldn't eat so much meat. We should consume more vegetables...
Choose now a video and prepare a comment just like the exemple just above for an oral presentation !