An ecologist who is studying the relationships among the dominant communities in a geographical region is studying a biome. select the best answer from the choices provided t f

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)

Ais a landform that is formed at the mouth of a river from the deposition of sediment carried by the river as the water flows.

Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this