The answer is A) Birth rate
The challenges range from terrorism and violent extremism, to piracy, political instability, elections-related violence, drug trafficking or deadly viruses.
Answer:
C) The Marianas, Oregon and Washington have had the sea floor bent downward by subduction to make trenches, the trench off Oregon and Washington is filled by sediment eroded from the nearby continent, but the Marianas don't have a nearby continent and so the trench there is not filled with sediment.
Obstical mountains or great britian mountain
True. Malaysia and Indonesia both occupy the island of Borneo. This was the answer from the test :)