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  2. Topic
    Geology/Geography/Oceanography/Atmospheric Sciences
  3. Study Set
    Scientific American Environmental Study Set 1
  4. Exam
    Exam 31: Technologies-But They Come With a Slew of Problems- Soil and Grassland Resources
  5. Question
    The Marine Trophic Index Has Decreased Dramatically Since 1990
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The Marine Trophic Index Has Decreased Dramatically Since 1990

Question 3

Question 3

Multiple Choice

The Marine Trophic Index has decreased dramatically since 1990. What does this statement mean?


A) Invasive species are taking over the oceans.
B) Higher-level predators are declining in numbers.
C) Whale numbers have made a dramatic increase.
D) A, B, and C are true.
E) None of these answers are true.

Correct Answer:

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