Geography Long Answer questions (5 Marks)

Answer the following question in about 150 words.
Limestones behave differently in humid and arid climates. Why? What is the dominant and almost exclusive geomorphic process in limestone areas and what are its results?

Answer the following question in about 150 words.
How do glaciers accomplish the work of reducing high mountains into low hills and plains?

Answer the following question in about 150 words.
Running water is by far the most dominating geomorphic agent in shaping the earth's surface in humid as well as in arid climates. Explain.