Climate change causes allopatric speciation through:
A. Population extinction due to the inability to adapt to unfavorable climate
B. All listed
C. Populations becoming divided through vicariance due to uninhabitable areas arising between populations
D. Dispersal to new areas that are more favorable in climate
Ans: B. All listed
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What is the leading hypothesis for what might have brought about the extinction of the dinosaurs?
A. Competition from mammals B. A new disease C. Massive volcano eruptions D. An asteroid impact
Which of the following is not true concerning the large intestine?
a. It is also called the colon. b. It harbors beneficial bacteria. c. It is involved with the absorption of sodium. d. It is involved with the absorption of water. e. It secretes digestive enzymes.
Which statement is not true?
(a) Nodes are present on horsetails. (b) The rhizome on horsetails bears roots. (c) The internode of a horsetail is the region where the leaves are attached. (d) Horsetails are members of the subphylum Sphenophyta.
During a long bout of sustained exercise, in which order will your body's energy stores/sources be used?
A. ATP stored in muscle, glycogen stored in muscle, glycogen stored in the liver, fatty acids B. ATP stored in muscle, glycogen stored in the liver, glycogen stored in the muscle, fatty acids C. ATP stored in muscle, fatty acids, glycogen stored in the muscle, glycogen stored in the liver D. glycogen stored in muscle, ATP stored in the muscle, glycogen stored in the liver, fatty acids E. fatty acids, glycogen stored in the liver, glycogen stored in the muscle, ATP stored in the muscle