What are the factors that affect the shape and growth rate of a snow crystal?
A.Humidity and temperature. B.Water and falling speed. C.Air and altitude. D.Both B and C.
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根据以下资料,回答题。Snowflakes What does Professor Libbrecht believe
根据以下资料,回答题。SnowflakesWhat does Professor Libbrecht believe to be true?A.No two