Grammar Exercise: The Politician's Letter - Linking Words

I wanted to write a few words to all of you (1) explain my decision to oppose the construction of another oil power station in our area. So much research has been carried out in (2) to show how dangerous these power stations are to our environment. (3), incredibly, the plan to build more remains.

My opponents have said my opposition puts local jobs at risk. (4), I would say that continuing with the construction of this power station puts lives at risk, and not only local ones. Rising sea levels and global warming (5) to our endless emissions of carbon dioxide put us all in danger.

(6) my party has decided not to oppose this power station, I have (7) been left with no alternative but to resign from my party. This is a bigger cause than any minor party dispute. Because (8) this, I will be standing as an independent candidate next year.