No!t depends someone how she/he work or fulfill them duties.
Yes it can I suppose it all depends on how you work and how you impress your boss
No I don't think so if the agency lead
Yes it can, many candidates go permanent with clients. There are many opportunities to up skill and earn more.
No They only use you for cheep labour the agency take's 70% so basely you only earn the same as the benefit it most you earn around $20 more so it's not worth it.