Which of the following is an intermediate in the citric acid cycle?
A) glutaric acid
B) oxalic acid
C) succinic acid
D) valeric acid
C
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Atoms of nonmetallic elements form covalent bonds, but they can also form ionic bonds. How is this possible?
A. An ionic bond results when a nonmetallic elements gains an electron from a metallic element. B. This happens when one of the bonded nonmetallic elements has a strong electronegativity. C. It happens when one of the nonmetallic elements loses an electron to become a positive ion. D. An ionic bond results when a nonmetallic elements loses an electron to a metallic element.
Using the analemma, find the declination of the Sun on the following dates; indicate whether the declination is north latitude or south latitude.
Date (a) January 10 (b) March 6 (c) May 9 (d) November 18
Countries considered NICs include ________.
A. Brazil B. China C. Mexico D. all of these E. none of these
In a dry climate, ____
a. there are no plants b. potential evaporation and transpiration exceed precipitation c. there is no precipitation d. precipitation exceeds potential evaporation and transpiration e. winters are short, but cold