What are some helpful and harmful examples of dna mutations

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)

Compare and contrast region e in the illustration above with region d. describe the physical characteristics of each region.

In a cladogram' when does a group of organisms branch off