The answer is sea stars. Sea stars can then push their stomachs out of the body while inserting it into the prey thus the food is being digested externally. Echinoderms are having 5 or at times multiple of 5 arms. Their shell is made of calcium carbonate.
Answer:
The normal pattern for most compounds is that as the temperature of the liquid increases, the density decreases as the molecules spread out from each other. ... The ice structure takes up more volume than the liquid water molecules, hence ice is less dense than liquid water.
Answer:
Los reactantes de la fotosíntesis son el dióxido de carbono y el agua. Estas son las moléculas necesarias para iniciar el proceso. Pero un artículo más es necesario, y esa es la luz solar.La clorofila es el pigmento verde en las hojas que captura la energía del sol.
Its protons because we know electrons= protons so its postive so a)
