Medical geographers have observed that the world-wide spread of HIV/AIDS from its hearth in Central Africa is best explained by a(n) ________ diffusion pattern
A) expansion
B) hierarchical
C) contagion
D) combination of expansion and hierarchical
Answer: B
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Plant eating animals, known as herbivores, begin the food chain by consuming plants
Indicate whether the statement is true or false.
Figure 3.15 Generalized pyramid of energy flow showing the decrease in usable chemical energy available at each succeeding trophic level in a food chain or food web.
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Use the accompanying figure to answer the following five questions.
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Why would there be fewer organisms at level A than at any level below it?
What will be an ideal response?
The distance between lines of longitude is equal across the globe
a. True b. False Indicate whether the statement is true or false
Discuss the role of the International Whaling Commission (IWC) in regulating commercial whaling
What will be an ideal response?