chemical reactions.
Biology, 24.10.2020 08:30 phillipsalexis274
Which is true about atoms?
A An atom cannot be orded or destroyed by
chemical reactions.
B. Atoms cannot be combined during chemical
reactions
C Atoms cannot be chemically bonded together
D. Aroms cannot be foundnar
Answers: 2
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The function of the excretory system is to control homeostasis and
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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
Which is true about atoms?
A An atom cannot be orded or destroyed by
chemical reactions.
chemical reactions.
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