The sand star Astropectean is an example of a heterotroph that feeds by ________ feeding
A) active predation
B) deposit
C) filter
D) passive predation
E) photosynthetic
A
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The causes of mortality differ greatly between developing and developed countries. In developing countries, a high proportion of mortality is caused by
A) infectious disease; while in the developed world, most deaths are related to crime. B) poor nutrition; while in the developed world, infectious disease causes most deaths. C) wars and accidents; while in the developed world, most deaths are related to infectious disease. D) infectious disease; while in the developed world, most deaths are related to aging and diseases connected to voluntary behaviors such as smoking and diet.
The relatively peaceful dismantling of the USSR
A) was facilitated in part by the fact that the USSR had a federal structure. B) occurred in the mid-1980s. C) would not have occurred without the brilliant statesmanship of President Bush. D) left many of the Soviet Republics without independence.
The world's largest warm pool is located at
A) A.
B) B.
C) C.
D) D.
The oldest eukaryotes in the fossil record are at least how old?
A)2.0 billion years old B)1.2 billion years old C)1.0 billion years old D)3.4 billion years old E)5.0 billion years old