The change from pangaea to the present configuration of the continents involved in what boundaries?

The change from Pangaea to the present configuration of the continents involved convergent boundaries and divergent boundaries. 
Convergent boundaries are tectonic boundaries where two plates are moving toward each other, as opposed to divergent boundaries, where plates are moving away from each other.

Probably north korea if your family has decided to use only nuclear power.

Mexico has a host of environmental problems, including significant chemicalpollution  from factory discharges and waste dumping, but the main threat to itsbiodiversity  probably stems from  deforestation  and other natural habitat losses. forest habitat is lost for a number of reasons