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Astudent heats a test tube containing a large amount of protein and biuret solution. she notice a colour change from violet to blue, explain why heating causes this colour change.
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Which food could be transported in a galvanized metal container?
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How can you tell the difference between rough er from smooth er?
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(select all the correct choose each statement that is scientific. - the opinions of randomly selected participants in a survey prove the idea that global temperatures are not increasing on earth. - the universe's average temperature and rate of expansion support the idea that it began as one super-dense and hot mass 13.8 billion years ago. - ocean tides are caused by the uneven gravitational pulls of the moon and sun on different parts of earth. - human life is more valuable than other forms of life on earth because humans are more intelligent than other organisms.
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Astudent heats a test tube containing a large amount of protein and biuret solution. she notice a co...
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