Biology, 29.02.2020 06:09 sarinawhitaker
"Human activities emit over 8 gigatons of carbon each year, but this is far more than actually accumulates in the atmosphere. Where does the rest of the carbon go?"
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Biology, 22.06.2019 09:30
Natural resources are any materials that humans obtain from the earth to meet our wants and needs.
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Biology, 22.06.2019 11:50
Which of the following describes how binary fission and mitosis are similar? a)they are both used for growth or repair b)they both break down membrane-bound nuclei c)both invoke the replication of a single stand of dna d)both replicate genetic material
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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?
Answers: 1
Biology, 22.06.2019 17:30
Astudent constructs a venom diagram to compare the organelle last in plant and animal cells which organelle should be listed under โbothโ in the diagram?
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"Human activities emit over 8 gigatons of carbon each year, but this is far more than actually accum...
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