Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 39, Problem 2CQ
Summary Introduction
To predict: The disadvantage for subsistence farmers to allow livestock to graze natural vegetation to the point that it disappears.
Introduction: Livestock grazing is the eating way of natural vegetation by herbivores like cows, goats, and so on. The method is sometimes encouraged to allow the conversion of grass and forage into milk and other animal products.
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Why is it a bad idea for subsistence farmers (those barely able to growenough crops to feed themselves) to allow livestock to graze naturalvegetation to the point that it disappears?
In some circumstances, grasses that initially lose tissues from being consumed by animals such as elk or cattle regrow more than they would have otherwise, and benefit from the moderate levels of grazing. Which of the following terms would best describe such a plant-herbivore interaction?a) Commensalismb) Mutualismc) Predationd) Parasitism
Many cultures and religions have customs which deal with the way they use the land. For example, in Judaism, it is required that a field be left fallow (unplanted) every seventh year. What is one beneficial effect of customs like this?
A) They prevent the land from being overused.
B) They cause less competition among farmers.
C) They make the land more valuable to farmers.
D) They force people to farm more recklessly at other times.
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Chapter 39 Solutions
Biology
Ch. 39.2 - Describe the direction of water movement when a...Ch. 39.3 - Prob. 1CSCh. 39.4 - Prob. 1CSCh. 39.4 - Prob. 1CCCh. 39.4 - Prob. 2CCCh. 39.4 - Prob. 3CCCh. 39.4 - Prob. 4CCCh. 39.4 - Prob. 5CCCh. 39.4 - Prob. 1EQCh. 39.4 - Prob. 2EQ
Ch. 39.4 - Prob. 6CCCh. 39.4 - Core Skill: Connections Look back to Figure 36.16,...Ch. 39 - Prob. 1TYCh. 39 - Prob. 2TYCh. 39 - Prob. 3TYCh. 39 - Prob. 4TYCh. 39 - Prob. 5TYCh. 39 - Which of the following statements best explains...Ch. 39 - What features of water explain how it can be drawn...Ch. 39 - Prob. 8TYCh. 39 - Prob. 9TYCh. 39 - Prob. 10TYCh. 39 - Prob. 1CQCh. 39 - Prob. 2CQCh. 39 - Prob. 3CQCh. 39 - Prob. 1COQCh. 39 - Prob. 2COQ
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