Q: In the water molecule, two of the electron pairs are lone pairs rather than what? Choices: - bonding ions - acid pairs - ions pairs - bonding pairs A:
bonding pairs
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Q: Twin studies have been instrumental in demonstrating what type of component in autism? Choices: - internal - bacterial - natural - environmental A:
environmental
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Q: Heavily vegetated lands are less likely to experience what? Choices: - expansion - drought - rains - flooding A:
flooding
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Q: The mars rover collected round clumps of crystals that, on earth, usually form in what? Choices: - rocks - volcanoes - air - water A:
water
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