What nations are located on china's northern border?

Which of the following statements about the migration of workers to other countries is false?

The incident command system (ics) is: a. most applicable to the management of complex incidents that extend over many hours or days. b. a military system used in domestic incidents to ensure command and control of federal resources. c. a standardized management tool for meeting the demands of small or large emergency or nonemergency situations. d. a relatively new approach created based on the lessons learned from hurricane harvey disaster operations.

Which planets are likely to have the strongest gravitational fields?