Study the image. What do the arrows at point 3 indicate?
A) Warm air is cooling quickly.
B) Cool air is above water.
C) Cool air is warming quickly.
D) Warm air is above land.

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?

Which three statements represent the benefits of performing experiments using computer simulations?

Part of the elbow is formed by the end of the humerus. what do you call this part?