Connectez-vous
Créer une activité
Types d'activités
Centre d'aide
Entrez votre Game Pin
Blog
Premium
English
Español
Français
Créer une activité
Connectez-vous
Toutes les activités
Jouer Test
Imprimer Test
Ozone layer
Autor :
Juan Santiago Geoghegan
1.
How many problems does the ozone depletion describes? They are related?
A.
One, they are no related.
B.
Two, they are related
C.
Three, they are related
D.
Two, they are related
2.
Did the ozone layer get better or worst?
A.
Are the same
B.
Is better now
C.
Is worst know
3.
Which is the most important cause of the ozone hole?
A.
Because much people smoke
B.
Is the presence of chlorine-containing source gases
4.
Which is one consequence of the ozone layer depletion?
A.
Skin cancer
B.
Is the presence of chlorine-containing source gases