A lake such as the one pictured is considered an
open system because

A. it is isolated by the mountains
surrounding it.
B. there is an input and output of energy
and water.
C. there are no interactions with other
bodies of water.

Development of new communities in disturbed environments, such as a burned or a clear cut forest, is called

Sediment layers stop lateral spreading when: they encounter a barrier they encounter an opposing current they run out of additional sedimentary material

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