Which of the following toxins is responsible for paralytic shellfish poisoning in humans?
A) Ciguatera
B) Dioxin
C) Gonyaulax
D) Karenia
E) Mercury
D
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The most striking feature of the Pleistocene Epoch was
A) the near-total absence of glaciers and ice on Earth. B) the expansion of glaciers and ice on Earth. C) the expansion of mountain glaciers but retreat of continental glaciers around the world. D) the expansion of continental glaciers but retreat of mountain glaciers around the world.
Why are fossils found in sedimentary rock?
What will be an ideal response?
Second to petroleum and natural gas, the most profitable physical resource recovered from the marine environment is ____
A) precious metals B) diamonds C) sand and gravel D) coal
Describe three consequences of tropical deforestation other than loss of biodiversity
What will be an ideal response?