Biology, 23.10.2019 18:10 glizbethh00

Which aspects of the angiosperm life cycle have been most influenced by interaction with animals?

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Biology, 21.06.2019 21:20, jacamron

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Biology, 22.06.2019 11:00, yasarhan2

Many organizations release indexes used to measure the development of the world's countries. as we learned in this lesson, these indexes measure many factors, from life expectancy to happiness. in your opinion, what are the three most important factors we can use to determine how developed a country might be? explain your answers in a few sentences.

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Biology, 22.06.2019 13:00, mimivenga

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 13:30, CarleySamuel

Where is most of the fresh water on earth found a in the ocean b in glaciers and in ice caps c in rivers d in the soil