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 3AC
Discuss the contribution of human population growth to (a) acid precipitation and (b) global climate change.
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If the human population were to stabilize tomorrow and never reach 8 billion people, would that solve all our environmental problems? Why or why not? What conditions might get better, and what challenges might remain?
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Which one of the following statements best describes projected water demands in the coming decades?
Group of answer choices
A Global water demand will increase mainly in developed countries
B Water demand will increase significantly in all countries
C Global water demand will increase, but agricultural demand will decrease
D Global water demand will increase mainly due to increased agricultural demand
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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- Earth has a total of 11.9 billion gha of productive land. How many people could Earth supportsustainably if the average ecological footprint were 8 gha per person (as in the United States)?arrow_forwardDescribe the condition on earth following the asteroid impact 65 million years ago. How long did it take for ocean food chains and ecosystems to recover?arrow_forwardBiocapacity isa. the carrying capacity of an ecosystem.b. the area of Earth required to produce the resources usedby humans.c. the number of species in an ecosystem.d. the amount of sustainable resources and wasteabsorbingcapacity of Earth.arrow_forward
- Propose a reason why the CO2 fluxes are greater for terrestrial biological activity than for marine biological activity.arrow_forwardProvide at least five climate change adaptation measures (Write in sentences or paragraph form with explanation)arrow_forwardDiscuss the causes and effects of global warming. What measures needto be taken to control global warming?arrow_forward
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