Réponse :
... had been ratified by most countries in November 2001
... have been listed by Leonardo DiCaprio in his Earth Day speech
... had been used by people nowadays
... are overused by some farmers in their crops
... had been consumed by Europe when the economic crisis broke out.
... had been saved by environmentalists after the oil spill
... of temperature in many areas had been by caused climate change
... had destroyed some rainforest ecosystems
... had been affected by global warming in different ways
... have been improved by the discovery of a non-polluting car
... had been posed by genetic engineering.
Explications :
