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What proportion of gross production was used for respiration.
Assume that nitrogen cycling in a deciduous forest ecosystem is complete and involves all the producers, consumers and nitrogen fixing, denitrifying and ammonifying bacteria described in lecture
What role, if any, do you think people should play in preserving those regions threatened by human encroachment.
Louisiana has a population of 4,469,000 and a birth rate of 17/1000 population. The death rate is 8.8/1000 people. In the average year, 2.3/1000 leave the state. What is the annual growth rate in pe
Explain why improved nutrition, medical care, and sanitation have contributed to the population growth rate. What should be done to stabilize population growth? How can this be accomplished.
What are some possible explanations for the patterns of vertical zonation seen in rocky intertidal habitats? Please include some of the adaptations important to a successful intertidal species. What
Describes the principal source of paleoclimate data available from Antarctica, and states what information it provides and explains which of the available data is proxy data.
the predatory species becomes more efficient at catching prey, while the prey species becomes better at escaping predators.
Create and describe a data set including independent and dependent variables (be creative) and a table of the data. Explain how this would best be graphed to accurately present the results of the r
It has been hypothesized that if the sun disappeared all life would end. Other than the obvious drop in temperature, why would humans probably die if the sun suddenly stopped shining? Justify your r
Discuss the three major species of Staphlococcus. Explain why one of them is more pathogenic compared to the other two species. Which factor determines the pathogeneisis of the organism.
You are conducting fieldwork at your Week 5 topic site and discover two groups of organisms.
Ecosystems change and may recover naturally from disturbance over time, what factors affect decisions about whether human intervention is needed to help ecosystem recovery? Provide examples.
Examine the hydrologic cycle and various methods of water use and management. What changes might occur in the hydrologic cycle if our climate were to warm up or cool down significantly.
Define succession and differentiate between primary and secondary succession. Consider an area in which a natural community such as a forest, stream, prairie, etc.
What happened in Yellowstone National Park when wolves were eliminated, and what happened when they were reintroduced? Discuss how wolves were eliminated.
Some opponents of endangered species efforts have argued that endangered species recovery is too expensive, stands in the way of individual property rights.
Consider the meaning of the term "ecology." How do the ideas of energy and chemical cycles, community structure, biodiversity and succession fit together to form the basis of the way the natural wor
What is the main difference between enveloped and nonenveloped viruses? How does this affect entry of each type of virus into the host cells? Variances are expressed.
I have read the chapter over and over and cannot figure out the answer and now I am curious to know the answer or how to figure out the answer.
Which of the following STD has the highest incidence based on the CDC findings.
Describes how some pathogens evade the immune system by avoiding it as much as possible in areas of the host not subject to strong immunological screening. Includes an example.
A 40-year-old male who was seropositive for HIV experienced abdominal pain, fatigue, and low-grade fever (38°C) for 2 weeks. A chest X-ray examination revealed lung infiltrates.
Describe how the mammalian immune system responds to (i) a laceration, such as an injury from falling on a barbed-wire fence, and (ii) a viral infection.
Name the five classes of immunoglobulins and their functions.