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An ecosystem can be defined as a natural unit in which there is an interaction of an environmental and a biotic system.
Q4: According to the text, not until the
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Q40: Which of the following colonies could boast
Q44: According to the text, there are now
Q71: Describe the "myth of marginality" and how
Q77: One of China's major economic successes, the
Q102: The theory that growth takes place in
Q104: Discuss the role of cities in America
Q150: The word "Mesopotamia", where remains of the