Biology, 01.08.2019 16:40 sarahabuadas532

Is it normal to lose your hearing when you yawn?

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Biology, 22.06.2019 15:00, cdeanrn8971

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Biology, 22.06.2019 22:30, little68941

Astudent wants to compare the amounts of co2 given off by yeast provided with different amounts of sugar. the student places a balloon over each container to catch the released co2. which observation is a qualitative observation the student can make?