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According to the keyed exam answer, it reaches 100 km/h in about 3 seconds.
Editor note: estimates vary; options left unchanged.
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According to the keyed answer, the greater wax moth hears best.
Editor note: record claims vary; options left unchanged.
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Ocean algae (phytoplankton) produce most of Earth's O₂.
Hence the keyed answer is Algae.
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Ultrasound is sound with frequency above 20 kHz.
Hence the keyed answer is Above 20 kHz.
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Bee-keeping for honey is apiculture.
So the correct answer is Apiculture.
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Protein denaturation makes it a chemical change.
So the correct answer is Chemical.
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