Homework Answers
C is correct answer because in atmosphere 78 percent is nitrogen gas. So atmosphere is source as well sink of nitrogen.
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The primary source and sink of nitrogen is Choose one: 0 A. forests © B. soil....
Cellular nitrogen fixation Choose one: © A. leads to the oxidation of nitrogen. B. occurs in...
Cellular nitrogen fixation Choose one: © A. leads to the oxidation of nitrogen. B. occurs in the absence of an enzyme. © C. can occur in both prokaryotes and eukaryotes. D. requires a lot of energy.
Choose one: Which of the following is true of carbon cycling? Choose one: A. Growing forests...
Choose one: Which of the following is true of carbon cycling? Choose one: A. Growing forests act as carbon sources. B. The conversion of CO2 into biomass requires oxygen. C. Burning fossil fuels increases atmospheric carbon dioxide. D. The atmosphere is the largest carbon reservoir.
Which one of the following statements about the carbon, phosphorus, and nitrogen cycles is true? The...
Which one of the following statements about the carbon, phosphorus, and nitrogen cycles is true? The major source of carbon used by plants is the carbonate rocks and soil. The major source of nitrogen used by plants in photosynthesis is the atmosphere. Phosphorus has no atmospheric component. Soil bacteria drive the phosphorus cycle.
2. An ecosystem pool that takes up (stores) more carbon than it releases is said to...
2. An ecosystem pool that takes up (stores) more carbon than it releases is said to be what? A) A carbon source B) A carbon sink C) Carbon neutral D) None of the above 3. Nitrogen mineralization is the process by which: A. producers take up soil nitrogen and incorporate it into their tissues. B. primary consumers ingest producers in the soil and absorb or excrete nitrogen from their tissues. C. soil microbes produce organic nitrogen compounds from inorganic soil...
Which one of the following is true about the source-sink population concept? a. It takes into...
Which one of the following is true about the source-sink population concept? a. It takes into account the quality of the matrix for facilitating dispersal. b. Lambda in sink populations is only slightly greater than 1. c. Successful immigration into sink habitats is inverse density-dependent. d. It differs from metapopulations by emphasizing variation in habitat quality among patches. e. None of the above.
(b) A source in a directed graph is a node with no incoming edges. A sink...
(b) A source in a directed graph is a node with no incoming edges. A sink is a node with no outgoing edges. Assume that we know that every DAG has at least one sink. Use this fact to explain why every DAG must have at least one source. (c) Consider the following graph algorithm which takes a DAG G as input. function COMPUTESOMETHING(DAG G) Lempty linked list S stack of all source nodes in G while S is non-empty...
EXTRA CREDIT B MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers...
EXTRA CREDIT B MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) The concentration of ozone in a sample of air that has a partial pressure of Oz of 0.53 torr and a total pressure of air of 695 torr is A) 0.076 B) 0.76 C) 1.3 10- 3 D ) 7.6 102 E) 1.3 - ppm. 2) Why does the upper atmosphere contain only very little dissociated nitrogen? A) Nitrogen atoms are...
3. Consider the potential combustion of nitrogen gas with oxygen to produce nitrogen monoxide. The K...
3. Consider the potential combustion of nitrogen gas with oxygen to produce nitrogen monoxide. The K for this reaction is 4.8 x 10-31 at 25°C. (a) Write the balanced chemical reaction for this equilibrium (b) At equilibrium, what species would be predominately present in a reaction flask (c) In the atmosphere at 25°C and latm pressure, the concentration of nitrogen gas is 0.0330 M and that of oxygen is 0.00810 M. Using these as initial concentrations, determine the concentration of...
Et NV,E] be a capacitated directed network with unique fixed source and unique fixed sink, no edg...
et NV,E] be a capacitated directed network with unique fixed source and unique fixed sink, no edges into the source, and no edges out of the sink. To eadh vertex u,e V, assign a number μj equal to 0 or-1. To each edge (Unuj)e E, assign a number yy defined by yy -max (0, H, - Hj). (See the discussion immediately preceding Example 10.) a. Prove that-t +pj + yi,2 0 for all i and j. b. Prove that yy...
Cellular nitrogen fixation Choose one: © A. leads to the oxidation of nitrogen. B. occurs in the absence of an enzyme. © C. can occur in both prokaryotes and eukaryotes. D. requires a lot of energy.
Choose one: Which of the following is true of carbon cycling? Choose one: A. Growing forests act as carbon sources. B. The conversion of CO2 into biomass requires oxygen. C. Burning fossil fuels increases atmospheric carbon dioxide. D. The atmosphere is the largest carbon reservoir.
(b) A source in a directed graph is a node with no incoming edges. A sink is a node with no outgoing edges. Assume that we know that every DAG has at least one sink. Use this fact to explain why every DAG must have at least one source. (c) Consider the following graph algorithm which takes a DAG G as input. function COMPUTESOMETHING(DAG G) Lempty linked list S stack of all source nodes in G while S is non-empty...
EXTRA CREDIT B MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) The concentration of ozone in a sample of air that has a partial pressure of Oz of 0.53 torr and a total pressure of air of 695 torr is A) 0.076 B) 0.76 C) 1.3 10- 3 D ) 7.6 102 E) 1.3 - ppm. 2) Why does the upper atmosphere contain only very little dissociated nitrogen? A) Nitrogen atoms are...
3. Consider the potential combustion of nitrogen gas with oxygen to produce nitrogen monoxide. The K for this reaction is 4.8 x 10-31 at 25°C. (a) Write the balanced chemical reaction for this equilibrium (b) At equilibrium, what species would be predominately present in a reaction flask (c) In the atmosphere at 25°C and latm pressure, the concentration of nitrogen gas is 0.0330 M and that of oxygen is 0.00810 M. Using these as initial concentrations, determine the concentration of...
et NV,E] be a capacitated directed network with unique fixed source and unique fixed sink, no edges into the source, and no edges out of the sink. To eadh vertex u,e V, assign a number μj equal to 0 or-1. To each edge (Unuj)e E, assign a number yy defined by yy -max (0, H, - Hj). (See the discussion immediately preceding Example 10.) a. Prove that-t +pj + yi,2 0 for all i and j. b. Prove that yy...
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