Could you please check these sentences for me?

Hi, I'm doing a article/oral piece on...L'effet de serre- i got a new teacher and I don't want to seem too stupid for now~

Bien que soit d'accord avec les scientifiques dont se sertissent tous les mondes dans la circulation d'informatique, les gens tiennent un mal vue avec les polituqes verts, en croyant que les actions contre une  augmentation d'emissions de carbone, ne sont pas important autant comme les scientifiques nous parlent

-Although being in agreeement with scientists whom sets everyone in an information circuit, people hold a bad view with green politics, believing that action against an increase in carbon emissions, is not as important as scientists tell us
(i always thought se sert meant 'to use' but apparently my dictionary says it means 'to set'...)

I also made an attempt at using the phrase 'only'..

Cependent, l'effet de serre ne deviendra que pire, a moins que nous ne s'agissons contre les problemes maintenant
(however, the green house effect will only get worse, unless we act against the problems now)

Vous utiliseriez l'energie solair de demander votre entreprise d'energie qui peut changer (si possible) vos termes du contract
(You could use solar energy with asking your electricity company who can change, if possible, your terms of contract)

Tony Abbott dont dire mesonges, qui sont criantes d'authentique dans son role; il parait que ce soit contre les politiques verts
(Tony Abbott whom tells lies, who is strikingly authentic in his roles; he seems to be against green policies)