The source of a stream is at an elveation of 1861 meters. the stream ends in a lake at an elevation of 361 meters. if the lake is 100 kilometers away fro the source, what is the average gradient of the stream? 1.5m/km

a
1.5m/km

b
.5 m/km

c
10 m/km

d
15m/km

What is the importance of having the us forest service, the bureau of land management, the us fish and wildlife service, and the national park service? to manage land resources for conservation and the development of natural resources to manage land resources for conservation and the development of urban areas to preserve historical landmarks and manage the development of urban areas to preserve historical landmarks and manage the development of rural areas

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Number and variety of living organism; includes genetic, species, and ecological types