Explain why a smart grid is important to increasing the portion of electricity generated by renewable sources like wind and solar in the United States.
What will be an ideal response?
The two fastest growing energy resources in the world and in the United States are solar and wind energy used to produce electricity. However, this growth will be limited unless wind farms and solar cell power plants built in sparsely populated areas or at sea can be connected to a smart grid. A national network of wind farms and solar cell power plants would make the sun and wind reliable sources of electricity around the clock.
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What is earthquake intensity, how is it measured, and what factors are involved in the intensity of a
quake? What will be an ideal response?
Why is a food web often a better description than a food chain of the way in which energy (food) is passed through an ecosystem?
What will be an ideal response?
The worlds climatic regions determine to a large extent the location of the world's biomes
Indicate whether the statement is true or false
Strong attachment threads, biological adhesives, a muscular foot, multiple legs, or hundreds of tube feet are adaptations to cope with which of the following adverse conditions of the rocky intertidal zone?
A) Difficulty finding mates B) Drying out during low tide C) Lack of space or attachment sites D) Predators E) Strong wave activity