Which of these infectious viral diseases affects the mean system and can cause major damage to organs such as the liver and brain
a: aids
b: syphilis
c: diabetes
d: parkinsons disease

What substance acts to prevent sudden ph changes in bodily fluids?

The image shows the evolution of a species of fish. a few fish from a population developed different social behaviors and evolved into different species. two fish according to the image, the fish underwent . the new species of fish had mating seasons that were different from that of the original fish. because of the differences in mating seasons, the fish underwent reproductive isolation. this mode of isolation would be .

All phases of matter may have a fixed mass