Biology: Life on Earth (11th Edition)
11th Edition
ISBN: 9780134168296
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Textbook Question
Chapter 29, Problem 2RQ
What is a producer? What trophic level does it occupy, and what is its importance in ecosystems?
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Chapter 29 Solutions
Biology: Life on Earth (11th Edition)
Ch. 29 -
1. Which trophic level(s) must be present to...Ch. 29 - Prob. 2MCCh. 29 - Denitrifying bacteria convert ammonia to nitrate...Ch. 29 -
4. Net primary production per unit area is likely...Ch. 29 - The effect of CO2 emissions from burning fossil...Ch. 29 -
1. Nearly all life gets its energy from _______...Ch. 29 -
2. Photosynthetic organisms are called either...Ch. 29 -
3. Feeding levels within ecosystems are also...Ch. 29 - In general, only about ______ percent of the...Ch. 29 - Prob. 5FTB
Ch. 29 -
6. During the nitrogen cycle, nitrogen gas is...Ch. 29 - Prob. 7FTBCh. 29 - Prob. 1RQCh. 29 -
2. What is a producer? What trophic level does it...Ch. 29 - 3. Define net primary production. Would you...Ch. 29 - Name the first three trophic levels. Among the...Ch. 29 - How do food chains and food webs differ? Which is...Ch. 29 - Define detritivore and decomposer and explain...Ch. 29 -
7. Trace the movement of carbon from one of its...Ch. 29 - Prob. 8RQCh. 29 - Trace a pathway of a phosphorus molecule from a...Ch. 29 -
1. Humans are omnivores who can feed on several...Ch. 29 - Discuss the contribution of human population...
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- How does energy movee through an ecosystem from one trophic level to the next and what is the consequences of human diet choices on ecosystem resources?arrow_forwardWhat is ecosystem?Give its components.arrow_forwardHow much energy is passed from one trophic level to the next? Explain why.arrow_forward
- In terms of trophic levels and energy, why do you suppose that there are not many top predators around?arrow_forwardWhat role does the predator–preycycle play in the energy flow of an ecosystem?arrow_forwardThe trophic levels found in this ecosystem are decomposers, producers, consumers, secondary consumers, and top predators. Which one of these converts light energy into chemical energy?arrow_forward
- Energy transferred from one trophic level to the next in an ecosystem is measured in calories, numbers, and in biomass. If a rangeland has a biomass of 100, 000g/m2 from the grass, how much biomass will be available in human beings who eat the cow that eat that grass?arrow_forwardHow does nature favour to raise the gross primary productivity while man tends to raise the net primary productivity?arrow_forwardCompare and contrast trophic levels, food chains, and food webs. How are these concepts related, and how do they differ?arrow_forward
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