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Biology, 21.06.2019 22:20, molinaemily009
Which best describes how the common cold spreads in the human body? a bacteria burst out of normal cells killing them b viruses replicate inside respiratory cells c bacteria inject dna into normal cells d viruses insert dna into bacteria
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Biology, 22.06.2019 04:30, Lindsay882
Why are scientists concerned about the depletion of the ozone levels in the stratosphere?
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Choose the correct words to complete the sentences related to genetic screening. is a procedure that is used during pregnancy to detect genetic defects. is extracted from the uterus and used to identify genetic disorders?
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What is not a function of the respiratory system?...
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