You discover a narrow subterranean river in the outback of Australia and estimate that it is at least 50 million years old, traveling through caves undisturbed by humans. You gather a crew of scientists to perform species sampling of the river as well as metagenomics techniques to calculate microbial diversity. The results indicate that although short in length, the river is extremely diverse. You even get to name a new species of shrimp after yourself! During one of your many interviews, you are asked to explain the high diversity of the subterranean river. What hypothesis would you cite?
A. The species-productivity hypothesis.
B. The intermediate disturbance hypothesis.
C. The species-time hypothesis.
D. The species-area hypothesis.
Answer: C
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Which of the following statements about flowering plants is TRUE?
A. A short-day plant requires nights longer than a certain critical period to trigger flowering. B. A long-day plant requires nights shorter than a certain critical period to inhibit flowering. C. A short-day plant requires daylight of short wavelengths. D. A long-day plant requires long wavelengths during the night. E. A long-day plant requires long days alternating with short days.
Honey bees will use ________ signals to alert other members of the hive about the location of a source of food
a. tactile b. chemical c. auditory d. acoustic e. visual
Nitrogen is released into the atmosphere by
a. nitrogen fixation. b. denitrification. c. nitrification. d. ammonification. e. decomposition
During development, after an injury, or to compensate for normal wear and tear, many cells in the body release hormone-like molecules called ________
Fill in the blank(s) with correct word