your answer for this question is B)
It depends on what you're asking. If angle a and b are both on a straight line, b would equal 169 degrees because the total has to add up to 180 degrees, but if they are on a right angle, b would equal 79 because it has to add up to 90 degrees.
Answer:
Some factors would be uhhhh..
Maybe tourism. i think its because many people travel there
Earthquakes are caused when plates shift. Hope that helps!