In meiosis? Tetrads maby? When two homologus chromosomes do crossing over they're called tetrads so..
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Ok so the change of the state is gas because u are boiling water so the water get hotter and then gas starts to come out of the water because of how hot it is
The answer to your question is A)front
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a method of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.
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