What role does heat play in creating new minerals or new crystalline structures in metamorphic rocks?
What will be an ideal response?
Answer: Heat allows individual ions to migrate more freely between sites in the crystalline structure or migrate into or out of rocks. In the process, new mineral grains will form that are larger than the original grains.
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Beyond increasing the food supply, what are the other advantages of growing food in cities?
What will be an ideal response?
The Aleutian low and Icelandic low are
A) dominant in the winter and weaken or disappear in the summer. B) dominant in the summer and weaken or disappear in the winter. C) dominant in the spring and fall and weaken or disappear in the summer and winter. D) dominant year-round, but tend to be strongest in the summer.
The Dust Bowl disaster of the 1930s was one of the greatest ecological and agricultural disasters in American history, resulting in thousands of deaths and a historic mass migration
The causes of the Dust Bowl, however, were both natural and man-made. Discuss the causes of the Dust Bowl and rate their severity. In your opinion, which do you think were the most powerful and did the most damage to the soil? What will be an ideal response?
A(n) _______________ feedback means that a change in one variable will cause changes in other variables that magnify the amount of original change
Fill in the blank(s) with correct word