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48 Cards in this Set
- Front
- Back
Process by which water vapor changes into liquid water
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condensation
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Process by which certain bacteria break down nitrogen compounds and release nitrogen
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denitrification
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Process by which liquid water changes into water vapor
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evaporation
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Process by which certain bacteria convert nitrogen in the soil into nitrogen compounds
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fixation
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Remains or evidence of an organism that once lived, preserved in rock
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fossils
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Moisture falling from the clouds as snow, rain, or hail
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precipitation
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The process by which plants give off water vapor
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transpiration
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a liquid changing to a gas
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evaporation
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evaporation from plants
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transpiration
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a gas changing to a liquid
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condensation
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moisture collecting on cool surfaces
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dew
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moisture falling to the Earth
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precipitation
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In order to evaporate, water needs _____.
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solar radiation
energy heat |
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Rain drops are formed by water vapor condensing on _____.
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dust
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the ratio of the total amount of precipitation compared with the total amount of evaporation for the entire Earth is:
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equal
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most of the precipitation reaching the Earth _____.
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evaporates
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As warm air containing water vapor rises, it continues to warm.
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false
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Rain falls when the suspended water droplets become too heavy
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true
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What sources release water vapor by evaporation?
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oceans
plants soil animals streams |
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Numerous microscopic water droplets which have condensed on dust and float in the air form what?
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clouds
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Air which will hold more water vapor is _____.
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warm air
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The falling of rain, snow, hail, or ice pellets from the atmosphere is called _____________.
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precipitation
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How does precipitation eventually return to the oceans?
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surface run-off
direct precipitation ground water icebergs |
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The water cycle was described in the Scriptures long before modern scientists understood it.
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true
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Carbon is restored to the atmosphere when animals decompose.
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true
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The atmosphere stores much more carbon dioxide than the oceans.
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false
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Carbon dioxide dissolves easily in water.
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true
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Coal, oil, and natural gas are formed from organic (plant and animal) remains as a result of rapid burial
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true
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The Carbon-Oxygen cycle is regulated by three great reservoirs _____.
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organisms
oceans rocks |
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The burning of fossil fuels will release _____ into the carbon-oxygen cycle.
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carbon
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Respiration releases:
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carbon dioxide
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All animals and people receive carbon from food
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true
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The carbon-oxygen cycle has proven to be very efficient at maintaining the exact quantity of oxygen in the atmosphere that we need for survival.
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true
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Animals are necessary to complete the nitrogen cycle.
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false
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Plants are capable of using nitrogen directly from the atmosphere.
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false
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Only plants are capable of making protein directly from nitrates.
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true
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Denitrification is unfavorable to farming.
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true
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Nitrogen fixation is a process that changes nitrogen into nitrogen compounds.
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true
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The two groups of bacteria responsible for nitrogen fixation are found in soil and in the roots of legumes
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true
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plants use nitrates to form proteins
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true
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Nitrogen released from decaying organisms is in the form of ammonia
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true
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A farmer may plow back legumes into the soil because they collect excess nitrates
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true
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The process by which bacteria produces nitrogen compounds is called what?
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nitrogen fixation
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Animals and humans do not need the nitrogen cycle to maintain life.
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false
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Plants need certain bacteria to produce usable nitrogen compounds because:
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plants cannot separate the nitrogen gas molecule into a usable element
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The chemical weathering of rocks at the Earth's surface releases phosphorus into the biosphere.
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true
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what statements are true about all the natural chemical cycles?
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Each cycle affects other cycles
Human activity has upset cycles in local areas All the natural cycles work together to support life |
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Water plants and algae can experience excessive growth if large quantities of phosphorus is carried into bodies of water by run-off.
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true
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