I am 20 years old and I want my stepdad to adopt me. About 10 years ago when my stepdad and my mom were married, he tried to adopt my brother and I, but my biological father would not give his consent. My biological dad lives about 20 minutes away from me and the only time I see him or talk to him is if I go visit him and his new family. Every since I turned 18 and he no longer has to pay child support, he no longer contacts me or tries to contact me. The only time I see him is in Wal-Mart or passing him on the highway. I haven't even recieved a card for Christmas or my birthday. The only dad I know is my stepdad and he has helped my mom raise me since I was 5 or 6. I am a 1st semester junior college and my mom and stepdad has helped this far.
Now that I am 20 years old, I was wondering is there anyway he can adopt me without my biological dad's consent. Please respond ASAP!!!!

I live in North Carolina.