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Transcript of 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100...
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Physicalprocess soil erosion
Naturalresources fossils
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Which ocean was produced by seafloor spreading between Africa and south America.
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South Atlantic ocean
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As distance increases from a mid ocean ridge , do the rocks get
older or younger?
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Grow old
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Assume a seafloor has been separating at an average rate of 5
centimeters a year. The sea is presently 8,000 kilometers wide. How long ago did the sea begin
to form.
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160,000,000 years ago
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A convection current of magma is made up of.
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A rising less dense liquid and a sinking more dense liquid
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Plate tectonics describes movements mainly in
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Earths crust
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What is the last stage in the production of soil?
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Fungi and bacteria break down organic matter.
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Soil is made up of…
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Weather rock and organic matter
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What process is mainly responsible for producing
minerals and nutrients in very young soil.
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Production of acids by bacteria and fungi.
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From top to bottom, what are the horizons of soil.
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Topsoil, subsoil, bedrock.
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Which of the following contains organic materials.?Unweathered rock
grasswater
air
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Grass.
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What is mainly responsible for preventing erosion, choose one of
the following. Mining
Farming
Rooting of plants
Logging.
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Rooting of plants
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Which human activity is related to loggoing.
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Clear-cutting.
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A landslide is an example of .
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Erosion.
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In what part of the united states was the dust bowl located.
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Central.
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What was the main cause of the dust bowl.
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Drought.
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Terracing is an method used to conserve, which of the following
Water
Air
Soil
Fuel
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soil
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A windbreak conserves
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Soil.
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For a family of four, what indoor use of water consumes the most
water per day
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Flushing toilets
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How can we prevent automobile air pollution?
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Switching to cars that run on electricity.
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How is farming most likely to produce water pollution.
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Fertilizers may enter bodies of water.
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Only changes in earths climates over time.
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A seashell on top of a hill most likely indicates that.
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The hill was once under the sea.
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Finding a fossil of a palm tree in Alaska could explained what about the climate of Alaska.
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Once was warmer than it is now
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If you found a fossil of a fresh water animal in a desert, what
could you conclude.
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The river once flowed through the desert.
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The fossil of a tiny horse is found in a layer of rock below the fossil of a larger horse. What can you conclude about the ages of the
fossils?
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The tiny horse fossil was older than the larger horse fossil.