Hello !
Réponse :
1.
1. Empreinte : footprint
2. Carbone : carbon
3. Quantité : quantity
4. Environnement : environment
5. Réduire : reduce
2.
1. Don't forget to switch off the lights when you leave a room.
2. My school teacher (she) recycles all the paper we use.
3. I don't know sorry
4. I go to school by car with two school-friends. My mum (she) drives us.
3.
Carpooling is environment-friendly. It mean that in the morning your mum - or your dad (they) don't only drive you but also a school friend or a colleague.
I hope it'll help you !