| 41. | The iron ore was formed from decayed vegetable matter that interacted with salts in the stream bed.
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| 42. | Sediment pollution inputs degrade stream bed quality by filling aggregate that Southern California Steelhead need for spawning.
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| 43. | We could be in a stream bed.
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| 44. | Seeing a glint of gold in the stream bed, he climbed down from his horse to investigate.
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| 45. | Branches and logs are then driven into the mud of the stream bed to form a base.
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| 46. | No longer can just one dorsal stream be accounted for with regard to processing vision for action.
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| 47. | From there the southbound path follows along a rural stream bed through the Whittier Narrows Recreation Area.
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| 48. | Stream beds are sensitive to grazing cattle.
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| 49. | Image : 24341channel . jpg | Small meandering channel in the stream bed of a larger channel.
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| 50. | A natural bridge is formed through erosion by water flowing in the stream bed of the canyon.
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