What is a trait and why is it important?

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)

Which type of organism is missing from the food web seen in the illustration? primary consumers decomposers primary producers secondary consumers

The negative impacts of nonnative species generally outweigh the positive impacts