Réponse :

Bonjour!

a) Earth Hour is a global annual event where millions of people switch off their lights for one hour.

b) Environmental activists support wind and solar power.

c) How can we make young people aware of the consequences of global warming?

d) He is a famous activist who has won a lot of international environmental awards.

e) The petitions urges/mobilized (ça pourrait être les deux!) political leaders to take action on climate change.

Voilà, bonne journée et bonne chance pour le reste!