A mass extinction of large mammals occurred during the ________ epoch
Fill in the blank(s) with correct word
Pleistocene
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Which of the following would not be used as a final electron acceptor in anaerobic respiration?
A) oxygen B) sulfur C) protons D) iron E) nitrogen
Which of the following statements is false
concerning breast cancer? a. It develops in one of 10,000 females a year. b. About 180,000 new cases are diagnosed a year in the United States. c. It does not affect males. d. It may have many underlying causes. e. Gene mutations predispose individuals to developing certain kinds of breast cancer.
The volume of space around a nucleus where an electron is most likely to be located is called the ________ of that electron.
A. energy level B. orbital C. pathway D. spin
In making an active prediction it is advantageous for the relationship being predicted to be of what sort?
A. Unbiased B. Efficient C. Confounding D. Causal