Jonas states four interesting facts about bones. which of jonas’s statements is incorrect? some bones have holes through them. bones are made mostly of sugars. bones are made of layers. bones can have different shapes.

During endocytosis, cells expel what they don't need take in what they need shrink due to loss of water

Natural resources are any materials that humans obtain from the earth to meet our wants and needs.

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?