Entoure la bonne réponse.

1. The main gas causing the greenhouse effect.
a. dust / b. oxygen carbon dioxide

2. Collecting paper and plastics so they can be used again.
a. recycling / b.cycling collection

3. The main actions of companies like Greenpeace and WWF:
a. criticize/ b. warn make fun of

4. A plant or animal that is having trouble living in a certain place and may disappear soon.
a. extinct species b. threatened species c. endangered species

Merci <3​