Marl is found with which of the following?
coal
oil shale
tar sands
natural...
Answers: 2
Biology, 22.06.2019 06:00
What element is able to combine with itself and hydrogen to form large molecules ?
Answers: 1
Biology, 22.06.2019 09:30
Knowing the importance of the essential elements, why would someone chose a diet that does not address all of them?
Answers: 1
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
Computers and Technology, 03.04.2021 14:03
Mathematics, 03.04.2021 14:03
Mathematics, 03.04.2021 14:03
English, 03.04.2021 14:03
Mathematics, 03.04.2021 14:03
English, 03.04.2021 14:03
Social Studies, 03.04.2021 14:03
Biology, 03.04.2021 14:03
English, 03.04.2021 14:03
Chemistry, 03.04.2021 14:03
Business, 03.04.2021 14:03
Mathematics, 03.04.2021 14:03
Engineering, 03.04.2021 14:03