2. In the diagram below, west is to the left, east is to the right, and the observer is looking toward the north. What is the direction of the wind? A. NE

B. NW

C. SE

D. SW

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?

What is the definition for temperature inversion

Which characteristics must an object possess in order to be considered alive?