Which groups of animals has members that move using cilia and flagella after they reach the adult stage?
a. amphibians
b. mammals
c. protists
d. fish

Aflame cell is at the end of each tubule of the nephridium malpighian tubules kidneys none of the above

One of the reasons that stars are so large is because

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?