Biology, 21.07.2019 13:30 katheline1226
Which explanation best describes photosynthesis
Answers: 1
Biology, 22.06.2019 09:00
Which two criteria must be met before scientist can use radiocarbon dating? explain your answer
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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 16:30
How to farmers could ensure that they only grow white flowers
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Biology, 22.06.2019 17:00
Your sense of touch depends upon: a. direct contact b. heat chemical c. reactions d. pain
Answers: 2
Which explanation best describes photosynthesis...
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