Which aquatic vertebrates are thought to be the ancestors of the amphibians?
A) skates and rays B) sharks C) lobe-finned fish D) tadpoles
Answer: C
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Scientists have studied atmospheric conditions over the last century and have noted that the
atmospheric carbon dioxide level has __________ and global temperatures have __________.
a. decreased; decreased b. decreased; increased c. increased; decreased d. increased; increased
If all offspring of a cross have the genotype Aa, the
parents of the cross are most likely a. AA x aa. b. Aa x Aa. c. Aa x aa. d. AA x Aa. e. none of these.
Identify and briefly describe three biogeographical realms as described by Wallace. What will be an ideal response?
Determine whether the following statement is true or false: Adenosine triphosphate (ATP) is a crucially important energy carrier in cells.
a. true b. false