If you have associated your YouTube and AdSense accounts, your YouTube partnership is dependent on having an active AdSense account. You will lose your YouTube partnership if your AdSense account gets terminated for any reason.
If your AdSense account has been terminated for invalid ad activity and you feel this was done in error, you may file an appeal.
You may only sign up for one AdSense account. For more information feel free to visit the AdSense Help Center.