Ques:Q: What is a stellar remnant that is very dense? Choices: - asteroids - the sun - white star - white dwarf A:

Ans:white dwarf
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Ques:Q: Cancer cells take up glucose for what reason? Choices: - heating - reproduction - food - energy A:

Ans:energy
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Ques:Q: What is the only substance on earth that is present in all three states of matter? Choices: - mercury - air - carbon - water A:

Ans:water
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Ques:Q: What is the major cause of outdoor air pollution? Choices: - electric lines - agricultural equipment - manufacturing industry - burning fossil fuels A:

Ans:
burning fossil fuels
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