Afunctional advantage of having human testes in the scrotum rather than in the abdomen is

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)

When the oxygen produced by photosynthetic plants in the water dissolves in the water, which of these is being formed?

Anormal strand of dna is shown below, followed by the same strand of dna after mutations have occurred.