1. if old mountains are worn down over the course of millions of years, what is one of the primary reasons that mountains still exist?
a) new mountains are created from leaf litter.

b) new mountains are created through city development.

c) new mountains are created through tectonic and volcanic activity.

d) new mountains are created from decomposition of plants and animals.

Adescription of at least one real life problem that has to be solved or decision that has to be made using good judgment, and obstacles encountered while making the decision(s) or solving the problem(s) (again, these can be real examples or imagined, but they should clearly illustrate your understanding of the obstacles described.) at least three key terms from the lesson used in your example(s):