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1B: Nutrient Cycles Review
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The 2 major processes involved in the carbon cycle are:
photosynthesis and cellular respiration
The biggest reservoir for nitrogen is:
the atmosphere
Step of the water cycle where water remains on the surface of the earth and moves with the terrain.
Runoff
What process of the water cycle occurs when water molecules fall from the clouds?
Precipitation
What process of the water cycle occurs when water molecules leave the leaves of plants?
Transpiration
What process of the water cycle occurs when clouds form?
Condensation
What process of the water cycle is completed when water molecules change from a liquid to a gas?
Evaporation
Burning of wood and fossil fuels by factory and auto emissions transfers carbon to the atmosphere as carbon dioxide.
Combustion
Animals eat plants for food, taking up the organic carbon (carbohydrates). Plants and animals break down these organic molecules and release energy, water and carbon dioxide.
Cellular Respiration
Carbon dioxide is taken up by plants and converted to glucose
Photosynthesis
Nitrogen can be changed to nitrates
Nitrogen fixation
bacteria convert ammonia and nitrate into nitrogen and nitrous oxide N2 & N2O Nitrogen is returned to the atmosphere to start the cycle over again.
Denitrification
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