Harmful algal blooms can be triggered by ________.
A. temperature and light combinations
B. disturbing cells buried in the sediments
C. nutrient runoff from land
D. high-salinity water
E. All of these are correct.
Answer: E
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Which member of the ecological trilogy are desert dwellers who provide livestock products, including live animals, meat, milk, cheeses, hides, and wool?
a. villager b. pastoral nomad c. urbanite d. yeoman farmer e. serf
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In the western part of North America, snowfall distribution is primarily dependent upon:
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