Biology, 02.09.2020 21:01 allieballey0727
Which of the following describes physical features on Earth that form political divisions? Natural boundaries Human-made borders Only oceans and rivers Only mountain ranges
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Biology, 21.06.2019 23:30
Which level of consumer had access to the smallest apply of energy
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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?
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Biology, 22.06.2019 13:00
Which of the following cell structures is significantly different between gram- positive and gram-negative bacteria?
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Biology, 22.06.2019 15:50
We all have different forms of genes from our parent(s).what are these different forms called? a.alleles b.characters c.dna d.resources
Answers: 2
Which of the following describes physical features on Earth that form political divisions? Natural b...
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