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Answer:
d. the ratio and size of the compound's ions
Explanation: The crystal structure of an ionic compound depends on the sizes of the cations and anions. and ratio of cations to anions.
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Acidic solutions turn litmus paper red.
Answer:
Geologists commonly consider faults to be active if there has been movement observed or evidence of seismic activity during the last 10,000 years. Active faulting is considered to be a geologic hazard - one related to earthquakes as a cause.
Explanation:
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