Two ways to make a vaccine.

Apart of the periodic table is shown. a portion of the sixteenth and seventeenth columns of the periodic table is shown. column 16 reads eight oxygen, 16 sulfur, and 34 selenium. column 17 reads nine flourine, 17 chlorine, and 35 bromine. which of the following elements is less reactive than the others? bromine (br) oxygen (o) selenium (se) sulfur (s)

Greenthe fossil record is the history of life recorded byhuman observationgod. climatologists. remains of the past.

Based on her survey, which advertising mediums will work best to publicize leslie's in-store specials?