i think he HAS lived in America for long time.

 it is very important.

  EXCELENT U HAVE A GOOD LEVEL OF ENGLISH I CONGRATULATE U 

I'm very impressed by his English accent, I think he has livesd  in America for a long time. I would like to talk speak English as like him!! I understand that he's talking about environmental questions. He says that everything we do can make an environmental difference about food, chemicals, travels and our choices generally. He thinks that to vote for politicalsians who recognize the universal truth (water, clean air...) is very important. He says that nobody has the right to destroy those things for future generations. As his father has done before, he defends the planet's values.

You could also say:  ...I understand he is talking about environmental issues...

très bien!!!!!

I agree with Jaffa. Well done once again!

Bon week-end!  Maggie

I'm very impressed by his English accent*  use of English, I think he has lived in America for a long time, I would like to talk speak English as well as him!!

I understand that he's talking about environmental questions. He says that everything we do can make an environmental  difference, about the food we eat, the chemicals we use, how we travel(s), our choices generally.  He thinks that to vote for politicals politicians who recognize the universal truth, everyone’s right to clean water, clean air, is very important.   He says that nobody has the right to destroy these things for future generations.

As his father has done before, he defends is defending the planet.  values.

* I changed your first line to "use of English" because he does not have an English accent, he has an American one. 

You have understood the article extremely well, and you are right he, does speak English perfectly with no hint of a foreign accent.  Most unusual in someone who has learned it after the age of seven.  Perhaps his father brought him up to speak both languages, or he grew up in America.  Your exercise was very, very good, I have just added some more of his words to make it flow more smoothly.  The second environmental I took out because it was not necessary, it was implied from the previous sentence.  Hope this helps. Very well done. Regards L