Biology, 01.07.2019 18:30 tatianaware1617
How does nutrient losses compare between the natural and clear-cut watersheds
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Biology, 21.06.2019 20:30
Construct an explanation about the function of mitosis for multicellular organisms
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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, 22.06.2019 15:00
Cells must be in osmotic equilibrium with their surroundings environments because if they swell or shrink thier membranes will rupture
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Biology, 22.06.2019 17:00
The part of the eye that closes and opens to let light in is .
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How does nutrient losses compare between the natural and clear-cut watersheds...
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