An energy pyramid shows the amount of
available at each feeding level in an ecosystem.

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)

Where is energy trapped inside the organelle chlorophyll

Coquina, a type of limestone, forms from shell fragments that settle on the ocean floor. what type of rock is coquina?