Man's physical universe

xanabras

THE GRADATION OF THE EARTH ,

147

14. What are the most important types of chemical changes that are involved in

weathering?

15. Name the outstanding scenic spots in the United States and state the most

important agents of erosion which have been responsible for them.

16. Explain how temperature changes can bring about weathering.

17 List the various agents of erosion under the three topics: disintegration,

decomposition, and transportation.

18. Mention four different ways in which water brings about erosion.

19. Why are the desert winds so effective in erosion?

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