Parents who tell their children not to read in dim light for fear of ruining their eyes are voicing well-founded concerns. repeating unfounded "old wives tales." unnecessarily scaring their children. actually putting the children at further risk for myopia.

What is the answer for the complicated molecules that make up living things usually contain carbon. why is carbon so important in these molecules?

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?

This is one of the five kingdoms in the older biological succession. organisms in this kingdom are prokaryotic.