No you do not need to file for another work authorization.

A UK citizen can visit the USA for a two-day business conference on a B-1 visa.

You may have two related jobs while I-485 is pending.

If submitted supporting documents are insufficient RFE will be issued.

Change of jobs is allowed while I-130 is pending.

The IV can be replaced. Your application cannot be denied because of the damage/legibility of the visa.

Yes, as soon as your divorce is final, you can remarry. Good luck.

A 19-year-old USC can sponsor the spouse for residency. You may seek assistance of counsel since the beneficiary in undocumented.

The I-94 is updated at the Port of Entry..

The I-485 cannot be approved until the I-360 is adjudicated.