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Biology, 22.06.2019 01:00
Dermal tissue in plants stores 1.extra food 2.transports water and nutrients 3.transports waste materials 4.is similar to epithelial cells in animals
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Biology, 22.06.2019 13:00
Astudy by solloch and et. al., in 2017, gives the map above which shows the frequency of alleles with a ccr5-delta32 mutations over 87 different countries. this mutation deletes the presence of a co-receptor (ccr5) on the outside of human t-cells (lymphocytes). some viruses, such as the one responsible for the black death and human immunodeficiency virus (hiv), require this receptor for attachment to host cells during the infection process. the black death was an epidemic that passed over northern europe during the 14th century killing nearly 60% of europeans. according to this information, which explanation best explains why northern europeans show a greater immunity for hiv than some other parts of the world?
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Biology, 23.06.2019 05:30
Explain the difference between the law of superposition and radioactive dating
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Biology, 23.06.2019 08:00
How did pasteur’s experiment with tech flasks disprove the idea that living things could just appear or come from non living things like water and air? no a, b,c, or d it’s a answer if yourself question answer quickly, !
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What is a potential problem with inbreeding?...
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