Explain why it is important to care about the survival of the endangered southern sea otters of California.
What will be an ideal response?
First, ethical reasons, as many people believe it is wrong to allow human activities to cause the extinction of a species. Another reason is that people love to watch playful and intelligent otters and as a result, they help to generate millions of dollars a year in tourism revenues. Finally, biologists classify southern sea otters as keystone species, which means that in their absence, sea urchins and other kelp-eating species on which sea otters feed would probably destroy the Pacific coast kelp forests and much of the biodiversity they support.
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How is the valley floor of Eds Creek different from the valley floors of the first-order streams?
What will be an ideal response?
All other factors being equal, which magma would flow the fastest?
- Low viscosity magma
- High viscosity magma
- Neither, magma does not have viscosity
The viewpoint that people, not environments, are the dynamic forces of cultural development is called:
A) environmental determinism B) possibilism C) syncretism D) civilization
Which two nations account for almost half of the global production of wind power?
A) China and Russia B) U.S. and Canada C) U.S. and Germany D) Bangladesh and Swaziland E) U.S. and China