Q: Has the average annual temperature on earth been rising or falling for the past 100 years? Choices: - unchanged - fluctuating - falling - rising A:
rising
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Q: What group of simple organisms recycles nutrients and has been on earth since long before multicellular life appeared? Choices: - bacteria - protists - eukaryotes - prokaryotes A:
prokaryotes
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Q: Where does the earth gets its energy from? Choices: - decomposers - precipitation - heat - sun A:
sun
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Q: A heterogeneous mixture of particles of one substance distributed throughout a second substance in a different phase is known as what? Choices: - disruption - solution - fluid - suspension A:
suspension
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