After hunting by european settlers, the bison population of 60 million was reduced to of its original size. a. 1 : 60 b. 1 : 600 c. 1 : 6,000 d. 1 : 60,000 select the best answer from the choices provided a b c d

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

substitution is the answer in this case

oxygen +1 most likely