Usually polar molecules have lone pairs because of their asymmetrical distribution of charge.
you can determine a molecules polarity by using a chart showing elements different electronegativities and subtracting them
ex. NonPolar molecules have electronegativities from 0.0 to 0.2, I have polar molecules have electronegativities from 0.2-1.4.
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D. An endangered species is in danger of becoming extinct in the near future. A threatened species could become endangered in the near future.
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visbility if that is an answer
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Crossing over, or recombination, is the exchange of chromosome segments between nonsister chromatids in meiosis. Crossing over creates new combinations of genes in the gametes that are not found in either parent, contributing to genetic diversity.
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