Biology, 10.07.2019 15:30 gnarlyjordan
What is nessecary for a convection cell to be set up in a fluid? 1.) thermal gradient and changes in density. 2.) changes in density 3.) thermal gradient
Answers: 1
Biology, 22.06.2019 11:20
Scientific evidence is most likely to be consistent if it is based on data from
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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 15:00
Which of the following must be true for a fossil organism to be useful as an index fossil? a. the fossil organism must be widespread geographically. b. the fossil organism must be abundant. c. the fossil organism must be limited to a short span of geologic time. d. all of the above.
Answers: 1
What is nessecary for a convection cell to be set up in a fluid? 1.) thermal gradient and changes i...
Mathematics, 26.02.2021 19:30
Mathematics, 26.02.2021 19:30
Mathematics, 26.02.2021 19:30
Mathematics, 26.02.2021 19:30
Mathematics, 26.02.2021 19:30
Mathematics, 26.02.2021 19:30
Mathematics, 26.02.2021 19:30
Mathematics, 26.02.2021 19:30
Mathematics, 26.02.2021 19:30
Mathematics, 26.02.2021 19:30
Mathematics, 26.02.2021 19:30
Mathematics, 26.02.2021 19:30