Which gas is most abundant in earth's atmosphere?

A. oxygen

B. nitrogen

C. carbon dioxide

D. methane

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Why did Egyptians call their king pharaoh

Solar panels convert light energy from sunlight into electrical energy. What material is most likely used in solar panels, and why? A nonmetal is used because it is a semiconductor and can become more conductive when more light shines on it.

Chess and Thomas (1977) identify three basic types or clusters of temperament (an individual's characteristic way of responding). What are these three?

Where did Europeans in the sixteenth century find a cheap labor source for work in the new world?

If you had to write a research paper on Maslow's hierarchy of motives, which of the following titles would you choose to capture the essence of Maslow's theory? 答案选项组 "Be all that you can be." "Easy come, easy go." "Keep those reinforcements coming.

Which factor is most often implicated in the failure of condoms?

2. Why would the loss of farms make it especially difficult for the Southern economy to recover? Many Southern industries would fail without the crops. The Southern economy was largely based on agriculture.

What were the states that were later carved out of land brought into the Union by the Louisiana Purchase

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