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Ch.16 Biology test

TermDefinition
Precipitation, evaporation, transpiration, and respiration are associated with what biogeochemical cycle? Water cycle
What could result in a decrease in atmospheric carbon? An increase in producer populations
How does CO2 from the atmosphere become transformed into organic carbon? Photosynthesis
What role do plants play in the nitrogen cycle? Convert nitrates and nitrites in the soil to proteins
What type of organism carries out most nitrogen fixation? Bacteria
Burning fossil fuels disrupts what 3 biogeochemical cycles? Nitrogen cycle, Carbon cycle, and Water cycle
How could global warming affect the water cycle? The rate of evaporation increases
What 2 biogeochemical cycles directly depend on photosynthesis? Carbon cycle and oxygen cycle
How does nitrogen get recycled back to the atmosphere? Denitrification bacteria
What processes converts organic carbon in carbohydrates to inorganic C02? Burning fossil fuels and cellular respiration
What effect would a decrease in nitrogen-fixing bacteria have on an ecosystem? Plant growth would be limited
When considering the carbon cycle, what would most likely affect the number of producers in a land ecosystem? The amount of carbon dioxide
What 2 biogeochemical cycles are most directly affected by man-made chemical fertilizers? Nitrogen cycle and Phosphate cycle
If nitrogen fertilizer from a lawn washes into a nearby pond, what would most likely be the effect? Increase in plant and algae growth
Which 2 human activities are most directly responsible for increases in atmospheric greenhouse gases? Deforestation and burning of fossil fuels
What is a natural source of inorganic phosphorus that is used by plants? Phosphorus is released through the weathering of rocks
This diagram summarizes which aspect of the carbon cycle? The cycle of carbon between the atmosphere and living organisms.
Created by: MaggieMae09
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