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