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L_0004
erosion and deposition by waves
T_0044
FIGURE 10.19 A groin is built perpendicular to the shore- line. Sand collects on the upcurrent side.
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textbook_images/erosion_and_deposition_by_waves_20036.png
L_0006
erosion and deposition by glaciers
T_0054
FIGURE 10.27 (A) The continent of Antarctica is covered with a continental glacier. (B) A valley glacier in the Canadian Rockies. (C) The surface of a valley glacier.
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textbook_images/erosion_and_deposition_by_glaciers_20044.png
L_0006
erosion and deposition by glaciers
T_0056
FIGURE 10.28 Features Eroded by Valley Glaciers. Ero- sion by valley glaciers forms the unique features shown here.
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textbook_images/erosion_and_deposition_by_glaciers_20045.png
L_0008
fossils
T_0066
FIGURE 11.1 A variety of fossil types are pictured here. Preserved Remains: (A) teeth of a cow, (B) nearly complete dinosaur skeleton embedded in rock, (C) sea shell pre- served in a rock. Preserved Traces: (D) dinosaur tracks in mud, (E) fossil animal burrow in rock, (F) fossil feces from a meat-eating dinosaur in Canada.
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textbook_images/fossils_20051.png
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fossils
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FIGURE 11.2 Fossilization. This flowchart shows how most fossils form.
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textbook_images/fossils_20052.png
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fossils
T_0067
FIGURE 11.3 Ways Fossils Form. (A) Complete Preser- vation. This spider looks the same as it did the day it died millions of years ago! (B) Molds and Casts. A mold is a hole left in rock after an organisms remains break. A cast forms from the minerals that fill that hole and solidify. (C) Compression. A dark stain is left on a rock that was compressed. These ferns were fossilized by compression.
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textbook_images/fossils_20053.png
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fossils
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FIGURE 11.4 What can we learn from fossil clues like this fish fossil found in the Wyoming desert?
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textbook_images/fossils_20054.png
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fossils
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FIGURE 11.5 Trilobites are good index fossils. Why are trilobite fossils useful as index fossils?
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textbook_images/fossils_20055.png
L_0009
relative ages of rocks
T_0073
FIGURE 11.6 Laws of Stratigraphy. This diagram illus- trates the laws of stratigraphy. A = Law of Superposition, B = Law of Lateral Conti- nuity, C = Law of Original Horizontality, D = Law of Cross-Cutting Relationships
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textbook_images/relative_ages_of_rocks_20056.png
L_0009
relative ages of rocks
T_0073
FIGURE 11.7 Superposition. The rock layers at the bottom of this cliff are much older than those at the top. What force eroded the rocks and exposed the layers?
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textbook_images/relative_ages_of_rocks_20057.png
L_0009
relative ages of rocks
T_0074
FIGURE 11.8 Lateral Continuity. Layers of the same rock type are found across canyons at the Grand Canyon.
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textbook_images/relative_ages_of_rocks_20058.png
L_0009
relative ages of rocks
T_0077
FIGURE 11.9 Cross-cutting relationships in rock layers. Rock D is a dike that cuts across all the other rocks. Is it older or younger than the other rocks?
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textbook_images/relative_ages_of_rocks_20060.png
L_0009
relative ages of rocks
T_0077
FIGURE 11.10 Huttons unconformity, in Scotland.
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textbook_images/relative_ages_of_rocks_20059.png
L_0009
relative ages of rocks
T_0079
FIGURE 11.11 Chalk Cliffs. (A) Matching chalk cliffs in Denmark and (B) in Dover, U.K.
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textbook_images/relative_ages_of_rocks_20061.png
L_0009
relative ages of rocks
T_0081
FIGURE 11.12 Using Index Fossils to Match Rock Lay- ers. Rock layers with the same index fossils must have formed at about the same time. The presence of more than one type of index fossil provides stronger evidence that rock layers are the same age.
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textbook_images/relative_ages_of_rocks_20062.png
L_0009
relative ages of rocks
T_0085
FIGURE 11.13 The Geologic Time Scale.
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textbook_images/relative_ages_of_rocks_20063.png
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relative ages of rocks
T_0086
FIGURE 11.14 The evolution of life is shown on this spi- ral.
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textbook_images/relative_ages_of_rocks_20064.png
L_0010
absolute ages of rocks
T_0089
FIGURE 11.15 Isotopes are named for their number of protons plus neutrons. If a carbon atom had 7 neutrons, what would it be named?
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textbook_images/absolute_ages_of_rocks_20065.png
L_0010
absolute ages of rocks
T_0089
FIGURE 11.16 Carbon-14 forms in the atmosphere. It combines with oxygen and forms carbon dioxide. How does carbon-14 end up in fossils?
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textbook_images/absolute_ages_of_rocks_20066.png
L_0010
absolute ages of rocks
T_0090
FIGURE 11.17 Unstable isotopes, such as carbon-14, decay by losing atomic particles. They form different, stable elements when they decay. In this case, the daughter is nitrogen-14.
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textbook_images/absolute_ages_of_rocks_20067.png
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absolute ages of rocks
T_0092
FIGURE 11.18 The rate of decay of carbon-14 is stable over time.
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textbook_images/absolute_ages_of_rocks_20068.png
L_0011
the origin of earth
T_0096
FIGURE 12.1 The Orion Nebula is the birthplace of new stars.
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textbook_images/the_origin_of_earth_20069.png
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the origin of earth
T_0096
FIGURE 12.2 The Inner Planets.
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textbook_images/the_origin_of_earth_20070.png
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the origin of earth
T_0096
FIGURE 12.3 The Kuiper Belt, a ring of icy debris in our solar system just beyond Neptune, contains many solar system bodies.
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textbook_images/the_origin_of_earth_20071.png
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the origin of earth
T_0098
FIGURE 12.4 Earths layers.
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the origin of earth
T_0101
FIGURE 12.5 Gases from Earths interior came through volcanoes and into the atmosphere.
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textbook_images/the_origin_of_earth_20073.png
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early earth
T_0108
FIGURE 12.6 E. coli (Escherichia coli) is a primitive prokaryote that may resemble the earliest cells. genetic instructions to the next generation.
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textbook_images/early_earth_20074.png
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early earth
T_0110
FIGURE 12.7 These rocks in Glacier National Park, Montana may contain some of the oldest fossil microbes on Earth.
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textbook_images/early_earth_20075.png
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early earth
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FIGURE 12.8 This fossil is from the Ediacara Fauna. Nothing alive today seems to have evolved from the Ediacara organisms.
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textbook_images/early_earth_20076.png
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water on earth
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FIGURE 13.1 Take a look at this image. Do you think that Earth deserves the name water planet?
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textbook_images/water_on_earth_20085.png
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water on earth
T_0132
FIGURE 13.2 What percentage of Earths surface fresh- water is water vapor in the air? Only a tiny fraction of Earths freshwater is in the liquid state. Most liquid freshwater is under the ground in layers of rock. Of freshwater on the surface, the majority occurs in lakes and soil. What percentage of freshwater on the surface is found in living things?
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textbook_images/water_on_earth_20086.png
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water on earth
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FIGURE 13.3 The water cycle has no beginning or end. Water just keeps moving along.
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textbook_images/water_on_earth_20087.png
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surface water
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FIGURE 13.4 All these forms of flowing water are streams.
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textbook_images/surface_water_20088.png
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surface water
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FIGURE 13.5 Water in a stream flows along the ground from higher to lower elevation. What force causes the water to keep flowing?
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textbook_images/surface_water_20089.png
L_0015
surface water
T_0139
FIGURE 13.6 River basins in the U.S.
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textbook_images/surface_water_20090.png
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surface water
T_0140
FIGURE 13.7 The Great Lakes of North America get their name from their great size.
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textbook_images/surface_water_20091.png
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surface water
T_0143
FIGURE 13.8 Craters and rifts become lakes when they fill with water. Where does the water come from?
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textbook_images/surface_water_20092.png
L_0015
surface water
T_0145
FIGURE 13.9 These are just three of many types of wetlands.
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textbook_images/surface_water_20093.png
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surface water
T_0146
FIGURE 13.10 A river in Indiana floods after very heavy rains. Some areas received almost a foot of rain in less than 24 hours!
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textbook_images/surface_water_20094.png
L_0016
groundwater
T_0148
FIGURE 13.11 Water seeps into the ground through permeable material and stops when it reaches an impermeable rock. Predict the purpose of the well in the diagram.
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textbook_images/groundwater_20095.png
L_0016
groundwater
T_0151
FIGURE 13.12 An aquifer is a layer of saturated porous rock. It lies below the water table. An impermeable layer, such as clay, is below the aquifer.
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textbook_images/groundwater_20096.png
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groundwater
T_0152
FIGURE 13.13 In this map, the area over the Ogallala aquifer is shaded in blue.
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textbook_images/groundwater_20097.png
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groundwater
T_0153
FIGURE 13.14 Big Spring is named for its large size. It releases more than 12,000 liters of water per second!
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textbook_images/groundwater_20098.png
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groundwater
T_0153
FIGURE 13.15 Lake George gets its water from a number of springs.
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textbook_images/groundwater_20099.png
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groundwater
T_0154
FIGURE 13.16 Grand Prismatic Spring in the Yellowstone National Park is the largest hot spring in the U.S. How can you tell from the photo that the water in this spring is hot?
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textbook_images/groundwater_20100.png
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groundwater
T_0155
FIGURE 13.17 Old Faithful in Yellowstone National Park is a geyser named for its regular cycle of eruptions.
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textbook_images/groundwater_20101.png
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groundwater
T_0156
FIGURE 13.18 A well runs from the surface to a point below the water table. Why must a well go lower than the water table?
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textbook_images/groundwater_20102.png
L_0017
introduction to the oceans
T_0158
FIGURE 14.1 Volcanoes were one source of water va- por on ancient Earth. What were other sources?
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textbook_images/introduction_to_the_oceans_20104.png
L_0017
introduction to the oceans
T_0159
FIGURE 14.2 At the time shown, there was one vast ocean and two smaller ones. How many oceans are there today? Thats why some people refer to the oceans together as the World Ocean.
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L_0017
introduction to the oceans
T_0161
FIGURE 14.3 The oceans and atmosphere exchange gases. Why does water vapor enter the atmosphere from the water?
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introduction to the oceans
T_0163
FIGURE 14.4 Coral reefs teem with life.
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introduction to the oceans
T_0166
FIGURE 14.5 What percentage of the salts in ocean water is sodium chloride?
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introduction to the oceans
T_0168
FIGURE 14.6 Distance from shore and depth of water define ocean zones. Which zone is on the ocean floor?
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textbook_images/introduction_to_the_oceans_20109.png
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ocean movements
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FIGURE 14.8 Waves cause the rippled surface of the ocean.
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textbook_images/ocean_movements_20111.png
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ocean movements
T_0170
FIGURE 14.9 A wave travels through the water. How would you describe the movement of wa- ter molecules as a wave passes through?
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textbook_images/ocean_movements_20112.png
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ocean movements
T_0172
FIGURE 14.10 Waves break when they reach the shore.
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textbook_images/ocean_movements_20113.png
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ocean movements
T_0173
FIGURE 14.11 A 2004 tsunami caused damage like this all along the coast of the Indian Ocean. Many lives were lost.
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textbook_images/ocean_movements_20114.png
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ocean movements
T_0174
FIGURE 14.12 Where is the intertidal zone in this pic- ture?
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textbook_images/ocean_movements_20115.png
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ocean movements
T_0176
FIGURE 14.13 High and low tides are due mainly to the pull of the Moons gravity.
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textbook_images/ocean_movements_20116.png
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ocean movements
T_0176
FIGURE 14.14 The Sun and Moon both affect Earths tides.
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textbook_images/ocean_movements_20117.png
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ocean movements
T_0177
FIGURE 14.15 Earths surface currents flow in the pat- terns shown here.
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textbook_images/ocean_movements_20118.png
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ocean movements
T_0180
FIGURE 14.16 In this satellite photo, different colors indicate the temperatures of water and land. The warm Gulf Stream can be seen snaking up eastern North America.
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textbook_images/ocean_movements_20119.png
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ocean movements
T_0180
FIGURE 14.17 Deep currents flow because of differences in density of ocean water.
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textbook_images/ocean_movements_20120.png
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ocean movements
T_0181
FIGURE 14.18 An upwelling occurs when deep ocean water rises to the surface.
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textbook_images/ocean_movements_20121.png
L_0019
the ocean floor
T_0183
FIGURE 14.19 Sound waves travel through ocean water, but they bounce off the ocean floor. They move through ocean water at a known speed. Can you use these facts to explain how sonar works?
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textbook_images/the_ocean_floor_20122.png
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the ocean floor
T_0183
FIGURE 14.20 A map of a 10,000 foot-high undersea volcano in Indonesia made by multibeam solar.
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textbook_images/the_ocean_floor_20123.png
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the ocean floor
T_0184
FIGURE 14.21 Vehicles for Underwater Exploration. These special vehicles have been used to study the ocean floor.
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textbook_images/the_ocean_floor_20124.png
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the ocean floor
T_0185
FIGURE 14.22 The features of the ocean floor. This dia- gram has a lot of vertical exaggeration.
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textbook_images/the_ocean_floor_20125.png
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the ocean floor
T_0188
FIGURE 14.23 Metals from the ocean crust are brought by hot water onto the seafloor to create chimneys, as shown in this photo.
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textbook_images/the_ocean_floor_20126.png
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ocean life
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FIGURE 14.24 Living things in the oceans are placed in these three groups.
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textbook_images/ocean_life_20127.png
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ocean life
T_0190
FIGURE 14.25 The phytoplankton (left) and zooplankton (right) shown here have been magnified. Otherwise, they would be too small for you to see.
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textbook_images/ocean_life_20128.png
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ocean life
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FIGURE 14.26 Nekton swim through ocean water.
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ocean life
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FIGURE 14.27 These animals live on the ocean floor.
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ocean life
T_0192
FIGURE 14.28 Tubeworms live near hot water vents on the deep ocean floor.
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textbook_images/ocean_life_20131.png
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ocean life
T_0193
FIGURE 14.29 Many marine food chains look like this example.
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textbook_images/ocean_life_20132.png
L_0022
energy in the atmosphere
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FIGURE 15.6 These campers can feel and see the en- ergy of their campfire.
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L_0022
energy in the atmosphere
T_0215
FIGURE 15.7 This curve models a wave. Based on this figure, how would you define wave- length?
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textbook_images/energy_in_the_atmosphere_20139.png
L_0022
energy in the atmosphere
T_0215
FIGURE 15.8 Compare the wavelengths of radio waves and gamma rays. Which type of wave has more energy?
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textbook_images/energy_in_the_atmosphere_20140.png
L_0022
energy in the atmosphere
T_0219
FIGURE 15.9 Convection currents are the main way that heat moves through the atmosphere. Why does warm air rise?
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textbook_images/energy_in_the_atmosphere_20141.png
L_0022
energy in the atmosphere
T_0220
FIGURE 15.10 The lowest latitudes get the most energy from the Sun. The highest latitudes get the least. How do the differences in energy striking different latitudes affect Earth? The planet is much warmer at the equator than at the poles. In the atmosphere, the differences in heat energy cause winds and weather. On the surface, the differences cause ocean currents. Can you explain how?
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textbook_images/energy_in_the_atmosphere_20142.png
L_0022
energy in the atmosphere
T_0221
FIGURE 15.11 Human actions have increased the natu- ral greenhouse effect.
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textbook_images/energy_in_the_atmosphere_20143.png
L_0023
layers of the atmosphere
T_0223
FIGURE 15.12 How does air temperature change in the layer closest to Earth?
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layers of the atmosphere
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FIGURE 15.13 Temperature Inversion and Air Pollution. How does a temperature inversion affect air quality?
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textbook_images/layers_of_the_atmosphere_20145.png
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layers of the atmosphere
T_0230
FIGURE 15.14 How does the ozone layer protect Earths surface from UV light?
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textbook_images/layers_of_the_atmosphere_20146.png
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layers of the atmosphere
T_0234
FIGURE 15.15 Friction with gas molecules causes mete- ors to burn up in the mesosphere.
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layers of the atmosphere
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FIGURE 15.16 The International Space Station orbits in the thermosphere.
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layers of the atmosphere
T_0238
FIGURE 15.17 Glowing ions in the thermosphere light up the night sky.
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world climates
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FIGURE 17.9 Find where you live on the map. What type of climate do you have?
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textbook_images/world_climates_20190.png
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world climates
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FIGURE 17.10 Africa is famous for its grasslands and their wildlife.
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textbook_images/world_climates_20191.png
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world climates
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FIGURE 17.11 Dry climates may be deserts or steppes. Sonoran Desert in Arizona (22 north latitude), Utah Steppe (40 north latitude).
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textbook_images/world_climates_20192.png
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world climates
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FIGURE 17.12 How do these climates differ from each other?
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textbook_images/world_climates_20193.png
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world climates
T_0308
FIGURE 17.13 Conifer forests are typical of the subarctic.
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textbook_images/world_climates_20194.png
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world climates
T_0309
FIGURE 17.14 Polar climates include polar and alpine tundra. Polar Tundra in Northern Alaska (70 N latitude), Alpine Tundra in the Colorado Rockies (40 N latitude).
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textbook_images/world_climates_20195.png
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climate change
T_0313
FIGURE 17.17 Pleistocene glaciers covered an enormous land area. Chicago is just one city that couldnt have existed during the Pleistocene.
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textbook_images/climate_change_20198.png
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climate change
T_0314
FIGURE 17.18 Earths temperature. Different sets of data all show an increase in temperature since about 1880 (the Industrial Revolution).
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textbook_images/climate_change_20199.png
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climate change
T_0314
FIGURE 17.19 Earths temperature (18502007). Earth has really heated up over the last 150 years. Do you know why?
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textbook_images/climate_change_20200.png
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climate change
T_0317
FIGURE 17.20 How much more carbon dioxide was in the air in 2005 than in 1960?
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textbook_images/climate_change_20201.png
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climate change
T_0318
FIGURE 17.21 How much did sea level rise between 1880 and 2000? Other effects of global warming include more extreme weather. Earth now has more severe storms, floods, heat waves, and droughts than it did just a few decades ago. Many living things cannot adjust to the changing climate. For example, coral reefs are dying out in all the worlds oceans.
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textbook_images/climate_change_20202.png
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climate change
T_0319
FIGURE 17.22 The Arctic will experience the greatest temperature changes.
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climate change
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FIGURE 17.23 In the 2050s, there may be only half as much sea ice as there was in the 1950s.
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