Which system uses the blood to eliminate excess body salts, water and wastes?
a. digestive
b. respiratory
c. cardiovascular
d. urinary
e. endocrine
ANSWER: d
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The earliest stromatolites were probably formed by
A) anoxygenic phototrophs. B) anoxygenic lithotrophs. C) oxygenic phototrophs. D) oxygenic lithotrophs.
Although all Anolis feed on insects and other invertebrates, they have evolved _____ different feeding strategies with correspondingly different sets of morphological traits
A. one B. two C. four D. six E. eight
What differences have neurobiologists detected in the brains of people with ADD?
A) increased folding in the cerebral cortex B) enlarged caudate nucleus in the left hemisphere C) enlarged cerebellum D) decreased volume of the cerebral cortex
The process of using DNA to produce complementary RNA molecules is called ______
Fill in the blank(s) with the appropriate word(s).