Bioluminescence is thought to be used for ________.
A. counter-illumination
B. attracting prey
C. attracting predators
D. predator avoidance
E. All of these are correct.
Answer: E
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Which of the following is a biogenous sediment?
A) Evaporites B) Halites C) Manganese nodule D) Phosphates E) Stromatolites
Using the above map, the British colony east of Argentina is
a. Saint Helena. b. the British Virgin Islands. c. Gibraltar. d. the Falkland Islands. e. Anguila.
In less developed countries, a large share of the labor force works in which sector? In certain African nations, India, and China, more than 75% of the workers are in this sector
A) primary sector B) secondary sector C) tertiary sector D) quarternary sector E) quinary sector
The fundamental form of cooperation between states, in which they formally acknowledge each other's existence, is
A) allegiance. B) treaties. C) recognition. D) boundary demarcation.