A.Plankton
B.Nekton
C.Mammals
D.Benthos
A.attachment
B.attaching
C.attache
D.adhering
The "white chalk cliffs of Dover" are mentioned in line 14 of the passage to
A.show where the plankton sediment first began to build up
B.provide an example of a plankton buildup that scientists cannot explain
C.provide an example of the buildup of plankton sediment
D.indicate the largest single plankton buildup on Earth
Why is it hard to see most plankton?
A.They are microscopic.
B.They move very quickly.
C.They are transparent.
D.They are rarely found near the surface.
The passage mentions all of the following aspects of plankton EXCEPT
A.the length of their lives
B.the level of the ocean at which they are found
C.their movement
D.their size
The primary topic of the passage is which of the following?
A.The origin of bioluminescence in plankton, predators
B.The disadvantages of bioluminescence in microorganisms
C.The varieties of marine bioluminescent life forms
D.Symbiotic relationships between predators and their prey
E.Hypotheses on the causes of bioluminescence in plankton
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A.Its opponents argue, however, that it will stop global warming.
B.Its opponents fear that it will damage the marine ecosystem, and now a computer model shows that the trick would also be remarkably inefficient.
C.As plankton die and settle on the ocean floor, their carbon is supposedly locked up in the seabed.
D.They found that 100 years later only between 2 and 11 per cent, of the extra carbon that was originally taken up by plankton had actually been removed from the atmosphere.
E."These are newer and better models."
F.Ocean fertilisation is not the answer to global warming.
Why does the author mention "planktonburgers" in paragraph 3?
A.To describe the appearance of one type of plankton.
B.To illustrate how much plankton a whale consumes.
C.To suggest plankton as a possible food source.
D.To compare food values of beef and plankton.
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