Biology: Life on Earth
10th Edition
ISBN: 9780321729712
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: Benjamin Cummings
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Textbook Question
Chapter 28, Problem 9RQ
Trace a pathway of a phosphorus molecule from a phosphate-rich rock into a carnivore. What makes the phosphorus cycle fundamentally different from the carbon and nitrogen cycles?
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Trace a pathway of a phosphorus molecule from a phosphaterich rock into a carnivore. What makes the phosphorus cycle fundamentally different from the carbon and nitrogen cycles?
Describe a nitrogen cycle that could take place in the picture above. Describe how nitrogen could move from an abiotic element of the system to a biotic element and back.
What incentives cause humans to capture nitrogen from the air and pump it into the nitrogen cycle? What are some consequences of human augmentation of the nitrogen cycle?
Chapter 28 Solutions
Biology: Life on Earth
Ch. 28 -
1. Nearly all life gets its energy from _______...Ch. 28 -
2. Photosynthetic organisms are called either...Ch. 28 -
3. Feeding levels within ecosystems are also...Ch. 28 - In general, only about ______ percent of the...Ch. 28 - Prob. 5FTBCh. 28 -
6. During the nitrogen cycle, nitrogen gas is...Ch. 28 - Prob. 7FTBCh. 28 - Prob. 1RQCh. 28 -
2. What is a producer? What trophic level does it...Ch. 28 - 3. Define net primary production. Would you...
Ch. 28 - Name the first three trophic levels. Among the...Ch. 28 - How do food chains and food webs differ? Which is...Ch. 28 - Define detritivore and decomposer and explain...Ch. 28 -
7. Trace the movement of carbon from one of its...Ch. 28 - Prob. 8RQCh. 28 - Trace a pathway of a phosphorus molecule from a...Ch. 28 - Trace the movement of a water molecule from the...Ch. 28 -
1. Humans are omnivores who can feed on several...Ch. 28 - Define and give an example of biological...Ch. 28 - Discuss the contribution of human population...Ch. 28 - Describe what would happen to a population of deer...
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- Label the steps that contribute to the nitrogen cyclearrow_forwardwhat is the term that describes an element that is "locked away" (perhaps deep underground in a deposit) and unable to enter a biogeochemical cycle?arrow_forwarda.Briefly describe the roles of Rhizobium, Nitrosomonas, Nitrobacter and Pseudomonasbacteria in the nitrogen cycle (about 200 words). b. Provide one example for each of the following from the sulfur cycle: a biotic flux a natural abiotic flux an anthropogenic flux..arrow_forward
- Describe two ways that the biological nitrogen cycleinteracts with the biological carbon cycle.arrow_forwardExplain why the anammox reaction is important to the global flux of nitrogenarrow_forwardIn the nitrogen cycle what are the organisms that break down nitrates and nitrites into nitrogen gas and return nitrogen to the atmosphere?arrow_forward
- In the nitrogen cycle, ? Occurs when nitrogen gas is converted to form usable to plants, often by nitrogen-fixing ?arrow_forwardCompare and contrast the water cycle and the carbon cycle.arrow_forward. What is the difference between evaporation and transpiration? Give examples of how the water cycle interacts with the carbon, phosphorus, and nitrogen cycles.arrow_forward
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Metabolic Pathways; Author: Wisc-Online;https://www.youtube.com/watch?v=m61bQYio9ys;License: Standard Youtube License