Question: level 3 will be implemented in firefox for windows first, and later on in firefox for osx and linux.
Answer: --> Level 3 will be implemented in Firefox for Windows first, and later on in Firefox for OSX and Linux.

Question: admission to permanent exhibitions is free
Answer: --> Admission to permanent exhibitions is free

Question: improving knowledge study on whether there are sources for the emissions of unintentionally produced hcb or pcb that have been overlooked and follow up to the results 2006-2008
Answer:
--> Improving knowledge Study on whether there are sources for the emissions of unintentionally produced HCB or PCB that have been overlooked and follow up to the results 2006-2008