What is swidden agriculture?
A) immediate replanting of crops following harvest
B) clearing and burning a site to be replanted later
C) the use of chemical fertilizers to increase yields
D) the use of organic fertilizers to increase yields
A
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Which is true about DNA replication?
A. It is semiconservative. B. It starts at an origin of replication. C. It is bi-directional. D. It requires RNA primers. E. All of the choices are correct.
What method of birth control is the most effective?
a. Condom b. Diaphragm c. Spermicides d. Withdrawal e. Vasectomy
The most dangerous type of arrhythmia is
a. tachycardia. b. ventricular fibrillation. c. brachycardia. d. atrial fibrillation. e. an electrocardiogram
A plant and an animal are both living things. According to the Cell Theory, what can you conclude about these two very different organisms?
A. Plants have cells but animals do not. B. They are both made of one or more cells. C. They both come from the same kind of cell. D. They both come from a non-living organism.