EP CONNECT ONLINE ACCESS FOR BIOLOGY
20th Edition
ISBN: 9781260494655
Author: Raven
Publisher: MCG COURSE
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Chapter 57, Problem 3A
If a pesticide is harmless at low concentrations (such as DDT) and used properly. how can it become a threat to nontargct organisms?
a. Because after exposure to DDT. some species develop allergic reactions even at low levels of exposure
b. Because DDT molecules can combine so that their concentration increases through time
c Because the concentration of chemicals such as DDT is increasingly concentrated at higher trophic levels
d. Because global warming and exposure to UV-B radiation renders molecules such as DDT increasingly potent
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What process brings nitrogen from the atmosphere into living system?
A. Methanogenesis
B. Denitrification
C. Anammox
D. Nitrogen fixation
E. Nitrification
Plants cannot fix nitrogen, yet some plants do NOT need nitrogen from the soil. This is because
a. of a symbiotic association with a bacterium that can fix nitrogen.
b. these plants are the exceptions that can fix nitrogen.
c. they have been infected by a parasitic virus that can fix nitrogen.
d. they are able to obtain nitrogen from the air.
We learned an ironic twist in the film called "The Other Inconvenient Truth." It was that
a. agriculture creates more pollution than other sources, but we have to increase farming for the growing population
b. that nitrogen in the soil is significant pollution, but if we don't use these fertilizers we will not have enough food
c. That methane is produced by animals and by growing rice. So becoming vegetarian won't clear methane from the atmosphere.
d. agriculture uses 70% of fresh water mined , causing a salt water pollution too
Chapter 57 Solutions
EP CONNECT ONLINE ACCESS FOR BIOLOGY
Ch. 57.1 - Prob. 1LOCh. 57.1 - Prob. 2LOCh. 57.1 - Prob. 3LOCh. 57.2 - Prob. 1LOCh. 57.2 - Explain the primary factors that determine which...Ch. 57.3 - Prob. 1LOCh. 57.3 - Prob. 2LOCh. 57.3 - Prob. 3LOCh. 57.4 - Prob. 1LOCh. 57.4 - Prob. 2LO
Ch. 57.5 - Prob. 1LOCh. 57.5 - Differentiate between point-source pollution and...Ch. 57.5 - Prob. 3LOCh. 57.5 - Prob. 4LOCh. 57.6 - Prob. 1LOCh. 57.6 - Prob. 2LOCh. 57 - Prob. 1DACh. 57 - Prob. 2DACh. 57 - Prob. 1IQCh. 57 - Prob. 2IQCh. 57 - 1. The Coriolis effect a. drives the rotation of...Ch. 57 - What two factors are most important in biome...Ch. 57 - In a rain shadow, air is cooled as it rises and...Ch. 57 - Thermal stratification in a lake a. is not...Ch. 57 - Prob. 5UCh. 57 - Deep-sea hydrothermal vent communities a. get...Ch. 57 - Prob. 7UCh. 57 - Which of the following is a point source of...Ch. 57 - If the Earth were not tilted on its axis of...Ch. 57 - Prob. 2ACh. 57 - If a pesticide is harmless at low concentrations...Ch. 57 - Prob. 4ACh. 57 - Discuss how figure 58.1 explains the pattern...Ch. 57 - Prob. 2SCh. 57 - If the world has experienced global warming many...Ch. 57 - What can be done to prevent new diseases from...
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