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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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Number and variety of living organisms includes genetic, species, and ecological types
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Natural selection changes allele frequencies because some survive and reproduce more successfully than others.
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State four advantages of incorporating organic
matter into the soil.
Solution​...
matter into the soil.
Solution​...
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