Answers: 2
Biology, 22.06.2019 04:00
Plsss > .< compare and contrast the characteristics of flatworms rounds worms and earthworms
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
Biology, 22.06.2019 22:30
What is a food chain? a.different animals located in different communities b. energy transferred from the sun to plants and then to a series of living things c. rows of crops, such as lettuce, in a field d.animals using one another as food for energy and growth
Answers: 2
Biology, 23.06.2019 06:00
When is the diploid number restored to the zygote? a.when the male and female haploid cells combine b.when the male and female diploid cells combine c.after the zygote is replicated d.when the two zygotes develop into a haploid cell
Answers: 2
Ways that computers can assist scientist in their work...
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