Which type of organism is the most complex?
A. Protostomes
B. Vertebrates
C. Cnidarians
D. Sponges

scientists have discovered that hiv does not cause aids by the virus's direct effect on the host's immune cells, but rather through the cells' lethal influence on one another. researchers from the gladstone institutes have revealed that hiv does not cause aids by the virus's

answer///alimentary canal/gastrointestinal tract.digestive (gi);