Which event would most likely result in the creation of large numbers of fossils?
A) a drought
B) an earthquake
C) a fire
D) a volcano
D
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Why does the eyecup of the flatworm only detect light and dark, not images?
A. There are too few photoreceptors. B. There is no lens. C. The eyecup is lined by a pigmented epithelium. D. Flatworms do not have a brain.
All of the following are involved with chewing the cud EXCEPT
a. regurgitation of food. b. increased breakdown of food. c. exposure of new surfaces for rumen microbes. d. incorporation of more oxygen into the food.
An action potential will be generated when the sum of all graded potentials reaches ________.
Fill in the blank(s) with the appropriate word(s).
Germ cell mutations ________
A) are of no consequence to the next generation B) are the cause of testicular cancer C) are only seen in females D) affect somatic cell function in the current generation E) are usually found in every cell of the next generation