Q: How many chambers does a mammalian heart have? Choices: - one - five - three - four A:
four
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Q: What do you call the state in which a plant slows down cellular activities and may shed its leaves? Choices: - recession - hibernation - germination - dormancy A:
dormancy
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Q: Desert plants have evolved processes to conserve water and deal with harsh conditions. a more efficient use of co2 allows plants to adapt to living with what? Choices: - less competition - more water - more sunlight - less water A:
less water
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Q: Electrons in inner shells are called what? Choices: - inner electrons - surface electrons - valence electrons - core electrons A:
core electrons
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