Which statement best describes how panting after running helps a person's body maintain homeostasis? EXPLAIN THE ANSWER A). It keeps the person's body warm when it is cold outside.

B). It rids the body of harmful organisms in the respiratory tract.

C). It brings more oxygen into the body to help meet increased energy needs.

D). It signals the body to start exercising to prevent getting out of shape.

What organs comprise the respiratory system of a bird

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?

Homo heidelbergensis was a tall, muscular hunter, who used both tools and weapons. because h. heidelbergensis was not a gatherer/forager, but ate a varied diet including meat and fish, we would expect to see what anatomical changes?