What best explains why glacial ice cores are ideal for examining climatic conditions in Earth's past?
A. are not contaminated by volcanic activity
B. record both warming and cooling periods
C. provide actual atmospheric temperatures going back millions of years
D. provide high-resolution data on both temperature and carbon dioxide
E. all of the answers listed here
Answer: D
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Fill in the blanks with correct word
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Global warming would likely lead to tropical diseases spreading farther north and south
Indicate whether the statement is true or false
Streams which flow for only a part of the year are ______.
a - antecedent b - dry c - superimposed d - consequent e - intermittent