Biology, 16.11.2020 19:30 isabellam646
This Irrigation system is very accurate on water application and can cover large field space, yet it is one of the most expensive methods
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Flood Irrigation
Drip Line Irrigation
Furrow Irrigation
Spray Irrigation
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Answers: 2
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?
Answers: 1
Biology, 22.06.2019 17:20
Can yall plz me on this question im having a hard time think about it
Answers: 1
This Irrigation system is very accurate on water application and can cover large field space, yet it...
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