What is the difference between a negawatt and a megawatt?
A) A negawatt is a megawatt of energy saved, while a megawatt is a million watts of energy used.
B) A negawatt is any amount of energy saved, while a megawatt is a measure equal to a million watts of energy.
C) A negawatt is the equivalent of 1 kilowatt of energy saved, while a megawatt is the equivalent of 1 kilowatt of energy used.
D) A negawatt is one thousand watts, while a megawatt is one million watts.
B
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Why wouldn't you use carbon-14 dating on a piece of shell that was estimated to be 1 million years old?
A. Sea shells do not have radioisotopes. B. Uranium dating is better for items older than 1/2 million years. C. Carbon dating is only useful on plants. D. The amount of radioactive carbon in the sample would probably too small to measure. E. Carbon dating can only be used on items that were once alive.
Which of the following languages is NOT part of the Uralic language family?
A) Finnish B) Estonian C) Hungarian D) Gaelic
Until about 10,000 years ago, our species depended on ________
A) cattle B) hunting and gathering C) hunting and herding D) crops and cattle E) crops
How have plants and animals adjusted to the harsh conditions in the alpine zone of the Rocky Mountains?
What will be an ideal response?