The time stretching from the emergence of Homo erectus until the dawn of human agriculture is called:
A. Holocene
B. Pliocene
C. Oligocene
D. Pleistocene
E. None of these.
Answer: D. Pleistocene
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Organisms in an ecosystem are linked to their physical environment through the cycling of _______ and the transfer of _________
A. energy; nutrients B. sunlight; water C. nutrients; energy D. water, sunlight E. nutrients; water
You are preparing a garden and want to provide the best environment for your plants. Which of the following would you add to the potting soil?
A. Mycorrhizae inoculant B. Coliform bacteria C. Sulfur oxidizers D. Bacteriophage
Gene has a sore throat with a 101°F fever, coated tonsils, and swollen glands. He should really see a doctor because the bacteria may eventually cause ________ within his body
A) disease of the heart valves associated with rheumatic fever B) asthma C) emphysema D) mesothelioma
The figure above demonstrates that Hardy–Weinberg frequencies are:
a. determined by allele frequencies. b. determined by haplotype frequencies. c. determined by linkage disequilibrium. d. A and B. e. All of the above.