Q: What is used to classify tornadoes? A:
OPTIONS:
- seismograph
- damage, snowfall
- humidity, rain
- wind speed, damage
wind speed, damage
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Q: Beaches and deserts collect large deposits of what? A:
OPTIONS:
- animals
- plants
- water
- sand
sand
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Q: Rupture or blockage of arteries in the head is the usual cause of what condition? A:
OPTIONS:
- heart disease
- migraine headache
- heart attack
- stroke
stroke
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Q: What causes maple leaves to change their colors? A:
OPTIONS:
- artificial preservatives
- factor reactions
- radiation reactions
- chemical reactions
chemical reactions
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