Answer:
The correct answers are options B and D which are decreases as altitude increases and results from a column of air pushing on an area respectively.
Explanation:
C. formal regions are known as "formal" because of the characteristics known by the people who live there and/or visit there
Its either A or B but I'm pretty sure its A<span />
A C and D. It cannot be b because scientists have warned people in the past about volcanoes and their possibility for erupting. Earthquakes cannot be predicted however there are warning signs one can look for.
Most likely due to its colonization by Europeans.