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Q. An ecologist studying plants in the desert performed the follow experiment.
She staked out 2 identical plots, each of that included a few sagebrush plants and numerous small annual wildflowers. She found the same five wildflower species in roughly equal numbers on both plots. She then enclosed one of the plots with a fence to keep out kangaroo rats, the most ordinary grainivores of the area. After two years, four of the flower species were no longer present in the fenced plot, but one species had increased drastically.
Using principles of community ecology, propose a hypothesis to explain the results and outline her methods and science processes (as in dependent variable, independent variable, controls, constants) as used in the experiment. What extra evidence would support your hypothesis?
What are some reasons for reestablishing wolves in Yellowstone National Park? What effects might the reintroduction of wolves have on the ecological communities in the region? What might be completed to mitigate the conflicts between ranchers and wol..
Eighteen museum specimens of the extinct great Auk were used to amplify coxI, a mitochondrial gene for cytochrome oxidase. DNA sequence analysis of 600 nucleotides of coxI revealed 5 alleles and the number of nucleotide differences between them are s..
What series could you use to make a beta barrel with twelve antiparallel strands? Write out one repeat of the sequence as follows: M-(your sequence) 12.
In Staphylococcus epidermidis, bacillus subtilis and escherichia coli, which one has gram- positive, which one has gram-negative? Also, which organism is the biggest? Which one is the least.
White tigers are indicated with unshaded symbols. (As you can see, there was considerable inbreeding in this lineage. For instance, the white tiger Mohan was mated with his daughter). In answering the questions, assume that hite.
Utilize your imagination to describe two ways in which disturbance of the sort just described may affect the animals that live on the panels and amount of free space available.
How can the photosynthesis process be enhanced to fix more CO2 than normal and plant productivity could be increased.
Jill is motivated by money and the things money will bring her. Jack is motivated by a belief in the significance of doing good things, and his incentives are based on that belief. Which theory incorporates both these types of motivational causes.
A friend has just returned from a trans-Atlantic jet aircraft flight and reported that the plane dropped about1000 m when it entered an "air pocket." Explain to a friend what apparently happened to cause this drop.
What organism produces the disease and how. Why is Anthrax such a potent weapon of bioterrorism? What are its characteristics that make it so.
Which lower vascular plant group once had tree-sized individuals (ca. 250- 300 mya) in swampy areas; their fossilized remains became a significant part of most coal deposits in the US.
Which distributed database process is best under these circumstances. How is the replication of the viral genome of retroviruses unique among the viruses? Why was it before believed that only DNA viruses could cause cancer.
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