Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 51.5, Problem 1SB
Summary Introduction
To review:
The way in which the dissolved oxygen varies in the headwater of a stream to the river mouth.
Introduction:
The amount of oxygen dissolved in water is called dissolved oxygen (DO). It determines the quality of a water body. The organic matter present diminishes the DO by increasing the biological oxygen demand (BOD) of the water.
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The term BOD (Biological Oxygen Demand):
Group of answer choices
is a measure of the organic matter and other oxygen-demanding wastes in a)a lake or stream.
b)is the highest after a person eats a candy bar
c)is defined as the amount of oxygen needed by fish to survive.
d)is defined as the number of organisms that need oxygen in a stream.
Next
What would the dissolved oxygen level most likely be if the temperature of the water was 35C
The most abundant constituent of atmospheric air is ?
Oxygen
Hydrogen
Carbon
Nitrogen
Chapter 51 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 51.1 - Why are studies of ecosystems more inclusive than...Ch. 51.1 - Prob. 2SBCh. 51.2 - Prob. 1SBCh. 51.2 - Prob. 2SBCh. 51.2 - Prob. 3SBCh. 51.2 - Prob. 4SBCh. 51.3 - Prob. 1SBCh. 51.3 - Prob. 2SBCh. 51.4 - Prob. 1SBCh. 51.4 - Prob. 2SB
Ch. 51.4 - Prob. 3SBCh. 51.4 - Prob. 4SBCh. 51.5 - Prob. 1SBCh. 51.5 - Prob. 2SBCh. 51.5 - Prob. 3SBCh. 51.6 - Prob. 1SBCh. 51.6 - Prob. 2SBCh. 51.6 - Prob. 3SBCh. 51.6 - Prob. 4SBCh. 51.6 - Prob. 5SBCh. 51 - Prob. 1TYKCh. 51 - Prob. 2TYKCh. 51 - Prob. 3TYKCh. 51 - Prob. 4TYKCh. 51 - Prob. 5TYKCh. 51 - The major source of nutrients in the headwaters of...Ch. 51 - Which biome experiences the highest annual...Ch. 51 - From which biome are trees excluded by periodic...Ch. 51 - Prob. 9TYKCh. 51 - Prob. 10TYKCh. 51 - Prob. 12TYKCh. 51 - Prob. 13TYKCh. 51 - Prob. 1ITDCh. 51 - Prob. 2ITDCh. 51 - Prob. 3ITD
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- ¿What is the atmospheric CO2 allowance?arrow_forwardYou visited a rainforest that has a rocky river, predict what will happen to its dissolved oxygen levels during a summer storm (will it have high or low DO levels)? What are the factors that will affect the condition of the river? In what way will it affect the river and its dissolved oxygen levels?arrow_forwardIf the trend continues as shown in the data what would the dissolved oxygen level most likely be if the temperature of the water was 35C?arrow_forward
- During which time of year would carbon dioxide concentration be the lowest? winter fall spring summerarrow_forwardWhat is atmospheric co2?arrow_forwardGasping for Oxygen Explain how each of the following contribute to dissolved oxygen decline in aquatic ecosystems: Rising water temperatures slowing streams organic pollutants/eutrophicationarrow_forward
- Which two gases absorbed by the oceans are the most important? O carbon dioxide & methane O carbon dioxide & oxygen O oxygen & hydrogen O oxygen & nitrogenarrow_forwardWhich of these statements describes an accurate model for how carbon dioxide and oxygen levels change within the ocean over time? Choose two answers that apply. A) eutrophication of the ocean leads to an increase in dissolved oxygen. B) photosynthesis by the phytoplankton increase the oxygen concentration of the ocean. C) decomposition of dead organic matter decreases the oxygen concentration in the ocean. D) cellular respiration by primary consumers increases the oxygen concentration in the ocean E) anaerobic respiration at the ocean floor decreases the carbon dioxide levels in the oceanarrow_forwardHow is the acidification of the oceans caused by our adding massive volumes of CO2 into the atomosphere each year?arrow_forward
- The Atmosphere, air quality, and pollution control Describe the atmosphere What is the outdoor air quality at present? Describe stratospheric ozone depletion and recovery What are the causes and the effects of acid deposition?arrow_forwardWhich graph best represents the relationship between the amount of pollutants in the air and the quality of the air? *arrow_forwardDesign an experiment to solve the following problem:Determine the rate of methanogenesis (CO2 + 4H2 S CH4 +2H2O) in anoxic lake sediments and whether or not itis H2-limited.arrow_forward
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