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What do organisms require to grow, reproduce and regulate various body functions?
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What is the amount of nutrients present in the soil at any given time called?
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What varies in different kinds of ecosystems and also on a seasonal basis?
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What happens to the nutrients which are never lost from the ecosystems?
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What is the movement of nutrient elements through the various components of an ecosystem known?
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What is the nutrient cycle alternatively called?
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What does a nutrient cycle involve?
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How many categories can a nutrient cycle be divided?
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What are the essential elements required by organisms for their body-building and metabolism called?
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Where is the gaseous type of nutrient cycle located?
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Where is the sedimentary type of nutrient cycle located?
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What so the environmental factors, e.g., soil, moisture, pH, temperature, etc. regulate?
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What is the function of the reservoir that is the atmosphere and the Earth’s crust?
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Limestone and dolomite are the reservoirs of which cycle?
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What percent of dry weight does carbon constitute in the living organisms?
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Which is the most abundant constituent found in living organisms?
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Out of the total quantity of global carbon, what percent of carbon is found dissolved in oceans?
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Which reservoir regulates the amount of carbon dioxide in the atmosphere?
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What percent of total global carbon does the atmosphere contain?
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Whose reservoir does fossil fuel represent?
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From which stages does the carbon cycling occur?
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What amount of carbon is fixed in the biosphere through photosynthesis annually?
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By which process does the carbon return to the atmosphere as CO2?
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By which process does the carbon return to the atmosphere as CO2?
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Which of the following organism contributes to the CO2 pool by the processing of waste materials and dead organic matter?
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Which human activities have significantly influenced the carbon cycle?
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In which form does the carbon dioxide precipitate after dissolving in water?
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What product does the plants from by photosynthesis using carbon dioxide?
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Which one of the following plants use as a source for carbon dioxide?
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For releasing CO2 in the atmosphere, how are fossil fuels exploited?
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