Given a sentence, fill out the missing word with a 'no' or a number (between zero and ten). You should write the numbers with english alphabet, like: four instead of 4.
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Question: Earthquakes are most frequent where ____ or more plates meet.

Answer: two


Question: Zygospores result from the fusion of ____ similar hyphal elements.

Answer: two


Question: Chemicals generally form ____ kinds of hazards, physical and health.

Answer:
two