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Questions and Answers
Which of the following is not one of the most important processes involved in the hydrologic cycle?
Which of the following is not one of the most important processes involved in the hydrologic cycle?
What is the primary way that carbon is stored long-term on Earth?
What is the primary way that carbon is stored long-term on Earth?
How does the amount of carbon on Earth today compare to the amount that has always been present?
How does the amount of carbon on Earth today compare to the amount that has always been present?
What is the primary way that carbon is released back into the atmosphere from long-term storage?
What is the primary way that carbon is released back into the atmosphere from long-term storage?
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Which of the following is not a reservoir or sink through which carbon cycles on Earth?
Which of the following is not a reservoir or sink through which carbon cycles on Earth?
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What is the primary role of marine organisms in the carbon cycle?
What is the primary role of marine organisms in the carbon cycle?
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What is one of the consequences of excess carbon dioxide mentioned in the text?
What is one of the consequences of excess carbon dioxide mentioned in the text?
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Where is organic nitrogen mainly found?
Where is organic nitrogen mainly found?
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What is the role of symbiotic bacteria in the Nitrogen Fixation Process?
What is the role of symbiotic bacteria in the Nitrogen Fixation Process?
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Which of the following processes involves converting nitrogen gas into various forms and back into the atmosphere?
Which of the following processes involves converting nitrogen gas into various forms and back into the atmosphere?
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How is nitrogen made available to plants according to the text?
How is nitrogen made available to plants according to the text?
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What is the primary source of inorganic forms of nitrogen?
What is the primary source of inorganic forms of nitrogen?
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How is ammonia primarily produced in industrial nitrogen fixation?
How is ammonia primarily produced in industrial nitrogen fixation?
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Which process involves the conversion of ammonia into nitrate in the soil?
Which process involves the conversion of ammonia into nitrate in the soil?
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What is the role of Rhizobium and blue-green algae in biological nitrogen fixation?
What is the role of Rhizobium and blue-green algae in biological nitrogen fixation?
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How are nitrites formed during nitrogen fixation?
How are nitrites formed during nitrogen fixation?
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What happens to the energy from lightning during atmospheric fixation of nitrogen?
What happens to the energy from lightning during atmospheric fixation of nitrogen?
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Which bacteria species are involved in converting nitrites into nitrates?
Which bacteria species are involved in converting nitrites into nitrates?
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What is the process that increases the availability of phosphorus in the soil?
What is the process that increases the availability of phosphorus in the soil?
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Which enzyme catalyzes the mineralization of phosphorus?
Which enzyme catalyzes the mineralization of phosphorus?
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What is the main reason for the decrease in availability of phosphorus in the soil?
What is the main reason for the decrease in availability of phosphorus in the soil?
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In what type of soils does sorption of phosphorus primarily occur through covalent bonds with Fe and Al?
In what type of soils does sorption of phosphorus primarily occur through covalent bonds with Fe and Al?
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What is the term used to describe the microbial cycling of P from inorganic soluble forms to insoluble organic forms?
What is the term used to describe the microbial cycling of P from inorganic soluble forms to insoluble organic forms?
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Which process contributes to the availability of sulfur for plants by releasing it into the atmosphere?
Which process contributes to the availability of sulfur for plants by releasing it into the atmosphere?
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Which process converts organic matter back into ammonium?
Which process converts organic matter back into ammonium?
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Which nitrogen compound is converted into gaseous nitrogen during denitrification?
Which nitrogen compound is converted into gaseous nitrogen during denitrification?
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Which of the following is NOT a form of nitrogen compound that plants can absorb from the soil?
Which of the following is NOT a form of nitrogen compound that plants can absorb from the soil?
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Which bacterial species are involved in the denitrification process?
Which bacterial species are involved in the denitrification process?
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What is the importance of the conversion of ammonia to other nitrogen compounds?
What is the importance of the conversion of ammonia to other nitrogen compounds?
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Which stage of the nitrogen cycle is responsible for introducing usable nitrogen compounds into the ecosystem?
Which stage of the nitrogen cycle is responsible for introducing usable nitrogen compounds into the ecosystem?
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